20060684 Ver 1_AsBuilt Monitoring Report_20120806

City of Greensboro
1. / North Carolina
o KPINMMI
TO: NCDENR, DIV. OF WATER QUALITY DATE:
WINSTON -SALEM REGIONAL OFFICE PROJECT:
585 WAUGHTOWN STREET RE:
WINSTON- SALEM, NC 27107
ATTENTION: SUE HOMEWOOD
WE ARE SENDING YOU:
® ATTACHED ❑ UNDER SEPARATE COVER VIA:
THE FOLLOWING ITEMS:
❑ SHOP DRAWINGS ❑ PRINTS ❑ SPECIFICATIONS
❑ CHANGE ORDER ❑ LETTER ® OTHER
f-1
N,C.Dept, of ENR
MAY 16 2012
Fngir ring & Inspectio
inston -Salem
MAY 15, 2012
DWQ #06 -0684
NEW GARDEN ROAD
STREAM RESTORATION
MONITORING RECORD
4 41-e
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6<02
COPIES
DATE
REVISION
DESCRIPTION
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5/15/2012
❑
LEVEL 1 STREAM RESTORATION MONITORING
® FOR YOUR USE
❑
AS REQUESTED 4
FIRST YEAR MONITORING REPORT,
RETURNED FOR CORRECTIONS,
❑ FOR REVIEW
❑
CHANNEL STABILITY
❑
RETURNED,AI;TER LOAN
❑ FOR DISTRIBUTION
❑
OTHER
COMMENTS:
THESE ARE TRANSMITTED AS CHECKED BELOW:
❑ FOR APPROVAL
❑
APPROVED AS SUBMITTED
❑
APPROVED AS NOTED
® FOR YOUR USE
❑
AS REQUESTED 4
❑
RETURNED FOR CORRECTIONS,
❑ FOR REVIEW
❑
RESUBMITTED
❑
RETURNED,AI;TER LOAN
❑ FOR DISTRIBUTION
❑
OTHER
COMMENTS:
COPY To USACE. FILE
SIGNED GUY B. INGLE
`� r,
PO Box 3136 ; Greensboro, NC 27 402-3136 , www.,ureensboro- ne.gov � 336- 373 -CITY (2489) TTY # 333 -6930

City of Greensboro
L / North Carolina
L MOTiER TOWN RTAN-153 M ITiTAL
TO: U.S. ARMY CORPS OF ENGINEERS
RALEIGH REGULATORY FIELD OFFICE
3331 HERITAGE TRADE DRIVE, SUITE 105
WAKE FOREST, NC 27587
ATTENTION: MR. THOMAS BROWN
WE ARE SENDING YOU:
M ATTACHED
THE FOLLOWING ITEMS:
❑ SHOP DRAWINGS
❑ CHANGE ORDER
Engineering & Inspections
DATE: MAY 15, 2012
PROJECT: SAW- 2007 -03980
RE: NEW GARDEN ROAD
STREAM RESTORATION
MONITORING RECORD
❑ UNDER SEPARATE COVER VIA:
❑ PRINTS ❑ SPECIFICATIONS ❑ PLANS
❑ LETTER M OTHER
COPIES
DATE
REVISION
DESCRIPTION
1
5/15/2012
AS REQUESTED
LEVEL 1 STREAM RESTORATION MONITORING
❑
RESUBMITTED
❑ FOR DISTRIBUTION
FIRST YEAR MONITORING REPORT,
OTHER
COMMENTS:
CHANNEL STABILITY
THESE ARE TRANSMITTED AS CHECKED BELOW:
❑ FOR APPROVAL
❑
APPROVED AS SUBMITTED
M FOR YOUR USE
❑
AS REQUESTED
❑ FOR REVIEW
❑
RESUBMITTED
❑ FOR DISTRIBUTION
❑
OTHER
COMMENTS:
COPY TO FILE
❑ APPROVED AS NOTED
❑ RETURNED FOR CORRECTIONS
❑ RETURNED AFTER LOAN
SIGNED GUY B. INGLE
PO Box 3136 -- Greensboro, NC 27402 -3136 www.greensboro- nc.gov 336 -373 -CITY (2489) = TTY # 333 -6930

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RECEIVED
N.0 Dept u• C'R
�. RQ Fw' IS 2092
CITY OF GREENSBORO if.. Regional Office
ENGINEERING DIVISION ,
NEW GARDEN ROAD WIDENING, PHASE II
PROJECT # -P -3741
' CULVERT REPLACEMENT AND
' STREAM RELOCATION /RESTORATION
HORSEPEN CREEK MAIN TRIBUTARY #2 AND TRIBUTARY A
LEVEL 1 STREAM RESTORATION MONITORING
FIRST YEAR MONITORING REPORT
CHANNEL STABILITY
' MAY 75, 2012
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US Infrastructure of Carolina, Inc.
125 South Elm Street, Suite 510
Greensboro, North Carolina 27401
N.C. License #C -1950
Carolina Wetland Services, Inc.
550 East Westinghouse Blvd.
Charlotte, NC 28273

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Level 1 Stream Restoration Monitoring
Horsepen Creek Main Tributary #2 and Tributary A
FIRST YEAR MONITORING REPORT
Channel Stability
New Garden Road Widening Phase II
City of Greensboro, North Carolina Engineering Division
Project No. P -3 741
US Infrastructure of Carolina, Inc.
125 South Elm Street, Suite 510
Greensboro, North Carolina 27401
N.C. License #C -1950
Prepared by:
12
Carolina Wetland Services, Inc.
550 East Westinghouse Blvd.
Charlotte, NC 28273
I.I
FS J CWS

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Table of Contents
Page
Introduction........................................................................................................ ..............................1
Methods............................................................................................................... ..............................1
PhotoReference Sites ...................................................................................... ...............................
l
ChannelStability ............................................................................................. ...............................
3
Results................................................................................................................. ...............................
3
PhotoReference Sites ....................................................................................... ..............................3
ChannelStability .............................................................................................. ..............................4
MainTributary # 2 ......................................................................................... ..............................4
TributaryA .................................................................................................. ...............................
7
Summary............................................................................................................ ...............................
8
Comments........................................................................................................ ...............................
8
Figures
Figure1: Site Location Map ................................................................................. ..............................2
Figure 2: As -Built Cross Sections and Photo Location Map .............................. ............................... 5
AppendixA ........................................................................................................ ..............................9
Photopage 1 — First Year Monitoring Photographs
AppendixB ..................................................................................................... ............................... 27
Main Tributary #2 Cross Sections
Main Tributary #2 Longitudinal Profile
Main Tributary #2 Pebble Count
Main Tributary #2 Raw Data
AppendixC ..................................................................................................... ............................... 52
Tributary A Cross Sections
Tributary A Longitudinal Profile
Tributary A Pebble Count
Tributary A Raw Data

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First Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P -3741
Introduction
The New Garden Road Widening Phase I1 Project is located in Greensboro, North Carolina as
shown on the Site Location Map (Figure 1) on the next page. Construction of this project
necessitated the relocation of portions of two tributaries to Horsepen Creek, Main Tributary #2
(South) and Tributary A (North). The relocation of these stream reaches was completed in
March 2011. The stream relocations were permitted through the U.S. Army Corps of Engineers
(Action I.D. SAW 2007 - 03980) and the North Carolina Department of Environment and Natural
Resources (DWQ Project #06 -0684) and required a Level 1 Stream Restoration Mitigation and
Monitoring Plan for this project. This level of monitoring includes the establishment of photo
reference sites, plant survival monitoring, and channel stability monitoring.
The relocated stream reaches were assessed using Rosgen Level II Classification methods. The
following end of first year survey was conducted to evaluate and document the conditions of the
relocated stream channels following one year after the completion of construction. This data will
be compared to the as -built survey which provided a baseline for these future monitoring events.
Methods
Photo Reference Sites
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Photographs were taken during:
1) First Year Survey for Channel Stability on January 25, 2012
In stream structures including rock vanes, root wads, and grade control sills were photographed
facing upstream and downstream. Stream bed and banks were photographed for visual
comparison of stability.

First Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P -3741
2

First Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P -3741
Channel Stability
A geomorphic survey was performed by engineers from USI with the assistance of a scientist
from CWS on January 10, 2012 following one year after the construction of the new stream
channels. The survey included a longitudinal profile, a cross sectional survey, substrate sampling
(Wolman reach -wide pebble count), and photo documentation of each of the stream reaches.
This data was used to classify each reach using the Rosgen Level II system. Bank pins were also
checked on both reaches to monitor bank stability.
Surveying methods (using a rod level and tape ) followed the gu idelines given
m Stream
Channel Reference Sites: An Illustrated Guide to Field Technique, General Technical Report
RM -245, United States Department of Agriculture, Forest Service. A relative benchmark for the
First Year survey was established on the top of an existing sanitary sewer manhole immediately
adjacent to New Garden Road. The surveys of both streams were tied together to the top of the
sanitary sewer manhole with a given elevation of 100.00.
IPlease note that during the First Year survey it was discovered that the power pole used during
the As -Built survey as a relative benchmark had been removed. This necessitated using the
sanitary sewer manhole as mentioned above as a new and hopefully permanent benchmark. Also
and following completion of the First Year survey, the benchmark data used for the As -Built
Isurvey was found to be in error. The As -Built Report (dated October 21, 2011) showed a
benchmark elevation of 777.2. Upon further research, the actual benchmark elevation was found
tto be 777.02. Therefore, all of the elevations collected during the As -Built survey had to be
adjusted by the difference of 0.18 feet. The As -Built data as shown in this report reflects this
' adjustment.
IResults
IPhoto Reference Sites
As part of the First Year survey for the project, all areas of the project were photo documented.
' In stream structures including rock vanes, root wads, and grade control sills were photographed
facing upstream and downstream. Stream bed and banks were photographed for visual
Icomparison of stability. Representative photographs are included in Photopage 1 (Appendix A).
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First Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P -3741
The locations and directions of each of these photographs are shown in Figure 2 (Page 5). As an
aside, the same locations and directions were used for these photographs as those taken during
the As -Built survey.
Channel Stability
Main Tributary #2
Main Tributary #2 flows north through the project area and through the new culvert installed
beneath the widened New Garden Road. The First Year survey of Main Tributary #2 was
conducted on January 10, 2012 by representatives from USI and CWS. The relocated stream
channel exhibited substrate consisting of medium gravel (D50 = 8 mm). The channel slope is
0.003 ft/ft with a sinuosity of 1.18. The average bankfull width and depth for this reach are 27
feet and 1.94 feet, respectively. The average bankfull cross sectional area for riffle portions of
the stream is 52.43 ft2. The average flood -prone area width for Main Tributary #2 is
approximately 60 feet. The new stream channel has a Rosgen Level II classification of C5.
Permanent cross sections were established during the As -Built survey and marked with rebar to
allow future monitoring of the same locations. Figure 2 on page 5 shows the locations of these
permanent cross sections. The As -Built and First Year conditions of Main Tributary #2 (Cross
Sections A and B) are summarized below in the following tables. Channel cross sections, the
longitudinal profile, and pebble count data for Main Tributary #2 are included in Appendix B.
Provide the followine data for each crnsc- cectinn• Crncc Sertinn A
Date Measured:
6/28/2010
1/10/2012
Cross - section being measured:
A
A
Cross - sectional area: as- built/present
60.01 sf
52.43 sf
Bankfull width: as- built/present
27.00 ft
27.00 ft
Floodprone Width: as- built/present
60.00 ft
60.00 ft
Width/depth: as- built/present
12.15
13.90
Entrenchment ratio: as- built/present
2.22
2.22
Stream Type: as- built/present*
C5
C5
nnir requirea /nr rilpe crns.s- secoons
.0

First Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P -3741
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fFirst Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P -3741
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Provide the followine data for each cross - section: Cross Section R
Date Measured:
6/28/2010
1/10/2012
Cross - section being measured:
B
B
Cross - sectional area: as- built/present
73.91 sf
68.42 sf
Bankfull width: as- built/present
27.00 ft
27.00 ft
Floodprone Width: as- built/present
70.00 ft
70.00 ft
Width/depth: as- built/present
9.86
10.65
Entrenchment ratio: as- built/present
2.59
2.59
Stream Type: as- built/present*
C5
C5
IT owy, reyuu•ea /or ri//le cress - sections
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The As -Built and First Year conditions of Main Tributary #2 (Longitudinal Profile) are
summarized below in the following table. The longitudinal profile for Main Tributary #2 is
included in Appendix B.
Date Measured:
6/28/2010
1/10/2012
Avg. slope riffles: as- built/present
0.005 ft/ft
0.023 ft/ft
Avg. slope pools: as- built/present
0 ft/ft
0 ft/ft
Number of riffles: as- built/present
1
1
Number of pools: as- built/present
4
4
The As -Built and First Year conditions of Main Tributary #2 (Pebble Counts) are summarized
below in the following table. The pebble count data for Main Tributary #2 is included in
Appendix B.
Date Measured:
6/28/2010
1/10/2012
Cross - section being measured
A and B
A and B
D16: as- built/present
0.125
0.125
D50: as- built/present
0.5
8.0
D84: as- built/present
11.3
16.0
The As -Built and First Year conditions of Main Tributary 42 (Visual Inspection) are summarized
below in the following table.
Date Inspected:
6/28/2010
1/10/2012
Structure Type
Cross Vane
Cross Vane
Is water piping through or around
structure?
No
No
Head cut or down cut present?
No
No
Bank or scour erosion present?
No
No
Other problems noted?
No
No
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First Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P -3741
Tributary A
Tributary A is a minor tributary which flows west along the toe of the widened New Garden
Road embankment to its confluence with Main Tributary #2. The First Year survey of Tributary
A was conducted on January 10, 2012 by representatives from USI and CWS. The relocated
stream channel exhibited substrate consisting of fine gravel (D50 = 5.7 mm). The channel slope
is 0.015 ft/ft with a sinuosity of 1.37. The average bankfull width and depth for this reach are 17
feet and 2.03 feet, respectively. The average bankfull cross sectional area for riffle portions of
the stream is 34.43 ft2. The average flood -prone area width for Tributary A is approximately 45
feet. The new stream channel has a Rosgen Level II classification of E4.
Permanent cross sections were established during the As -Built survey and marked with rebar to
allow future monitoring of the same locations. Figure 2 on page 5 shows the locations of these
permanent cross sections. The As -Built and First Year conditions of Tributary A (Cross Sections
C and D) are summarized below in the following tables. Channel cross sections, the longitudinal
Iprofile, and pebble count data for Tributary A are included in Appendix C.
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Provide the following data for each crncc- cectinn• rrncc Certinn C
Date Measured:
6/28/2010
1/10/2012
Cross - section being measured:
C
C
Cross - sectional area: as- built/present
32.45 sf
34.43 sf
Bankfull width: as- built/present
17.00 ft
17.00 ft
Floodprone Width: as- built/present
45.00 ft
45.00 ft
Width/depth: as- built/present
8.91
8.39
Entrenchment ratio: as- built/present
2.65
2.65
Stream Type: as- built/present*
E4
E4
only requireu jot' lYJjIC c'r0s.S'- .S'eC17on.S
Provide the fnllowinu data fnr Parh rrncc_certinn• ('rnee Cnrtinn "
Date Measured:
6/28/2010
1/10/2012
Cross - section being measured:
D
D
Cross - sectional area: as- built/present
39.59 sf
44.76 sf
Bankfull width: as- built/present
19.00 ft
20.50 ft
Floodprone Width: as- built/present
55.00 ft
55.00 ft
Width/depth: as- built/present
9.12
9.39
Entrenchment ratio: as- built/present
2.89
2.68
Stream Type: as- built/present*
E4
E4
on1}' reytureu jor rype cro.t.S-.secuon.t
7

SFirst Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P -3741
The As -Built and First Year conditions of Tributary A (Longitudinal Profile) are summarized
below in the following table. The longitudinal profile for Tributary A is included in Appendix C.
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Date Measured:
6/28/2010
1/10/2012
Avg. slope riffles: as- built/present
0.023 ft/ft
0.023 ft/ft
Avg. slope pools: as- built/present
0 ft/ft
0 ft/ft
Number of riffles: as- built/present
3
3
Number of pools: as- built/present
4
4
The As -Built and First Year conditions of Tributary A (Pebble Counts) are summarized below in
the following table. The pebble count data for Tributary A is included in Appendix C.
Date Measured:
6/28/2010
1/10/2012
Cross - section being measured
C and D
C and D
D16: as- built/present
0.125
<0.062
D50: as- built/present
8.0
5.7
D84: as- built/present
22.6
32.0
The As -Built and First Year conditions of Tributary A (Visual Inspection) are summarized below
in the following table.
Date Inspected:
6/28/2010
1/10/2012
Structure Type
Cross Vane
Cross Vane
Is water piping through or around
structure?
No
No
Head cut or down cut present?
No
No
Bank or scour erosion present?
No
No
Other problems noted? I
No
No
Summary
Comments
The channels (Main Tributary #2 and Tributary A) relocated as part of the New Garden Road
Widening Phase Il Project appear to be geomorphically and hydraulically stable with regard to
pattern, profile, and dimension. Other than ongoing monitoring and observation there are no
recommendations to perform any remediation at this time.
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First Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
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Appendix A
Photopage 1 — First Year Monitoring Photographs
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First Year Monitoring Report: Photo Documentation — Photopage 1
INcw Uarucl► tcuau wiuenmg rnase ii YYo)eCt NO. V -S /41
Photo 1: Tributary A — permanent cross section, left bank looking upstream
Photo 2: Tributary A — permanent cross section, left bank looking upstream
10

First Year Monitoring Report: Photo Documentation — Photopage I
New Garden Road Widening Phase II Project No. P -3741
Photo 3: Tributary A — permanent cross section, left bank looking upstream
Photo 4: Tributary A — Root Wad Area A, centerline looking upstream

First Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II
wi yy
Project No. P -3741
Photo 5: Tributary A — Grade Control Sill A, centerline looking upstream
Photo 6: Tributary A — Cross Vane A, left bank looking downstream
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First Year Monitoring Report: Photo Documentation — Photopage 1
Garden New R•.• Widening Phase 11
Project
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First Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Proiect No. P -3741
Photo 9: Tributary A — Cross Vane A, left bank looking upstream
Photo 10: Tributary A — Cross Vane A, left bank looking upstream
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First Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase I1
Photo 11: Tributary A — Cross Vane B, left bank looking downstream
No. P -3741
Photo 12: Tributary A — Root Wad Area B, left bank looking upstream
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First Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II
No. P -3741
Photo 13: Tributary A — Confluence with Main Tributary #2, looking downstream
Photo 14: Tributary A — Cross Vane B, left bank looking upstream
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First Year Monitoring Report: Photo Documentation — Photopage I
New Garden Road Widening Phase II
Project No. P -3741
Photo 15: Main Tributary #2 — permanent cross section, right bank looking upstream
Photo 16: Main Tributary #2 — Root Wad Area D, right bank looking downstream
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First Year Monitoring Report: Photo Documentation — Photopage I
New Garden Road Widening Phase II Project No. P -3741
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First Year Monitoring Report: Photo Documentation — Photopage 1
19

First Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II
Project No. P -3741
Photo 21: Main Tributary #2 — Cross Vane D, centerline looking downstream
Photo 22: Main Tributary #2 — Root Wad Area D, centerline looking upstream
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' First Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
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Photo 23: Main Tributary #2 — Cross Vane D, left bank looking upstream
Photo 24: Main Tributary #2 — Cross Vane C, left bank looking downstream
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First Year Monitoring Report: Photo Documentation — Photopage I
New Garden Road Widening Phase II
�?
im 1�
No. P -3741
P'
Photo 25: Main Tributary #2 — Riffle Pool B, centerline looking upstream
Photo 26: Main Tributary #2 — Cross Vane C, centerline looking downstream
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First Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
Photo 27: Main Tributary #2 — Cross Vane C, right bank looking downstream
Photo 28: Main Tributary #2 — Confluence with Tributary A, looking downstream
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First Year Monitoring Report: Photo Documentation — Photopage I
New Garden Road Widening- Phase II
Project No. P -3741
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Photo 29: Main Tributary 42 — Cross Vane C, right bank looking upstream
Photo 30: Main Tributary #2 — Miscellaneous, left bank looking downstream
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First Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
s .. Y Til, f Syr i�.
Photo 31: Main Tributary #2 — Root Wad D, left bank looking upstream showing
both permanent cross sections
Fhoto 32: Main Tributary #2 — Root Wad D, left bank looking downstream
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First Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
Photo 33: Main Tributary #2 — New Garden Road culvert, looking upstream
Photo 34: Main Tributary #2 — Downstream of New Garden Road, looking downstream
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First Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
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Appendix B
Main Tributary #2 Cross Sections
As -Built (Corrected)
First Year Monitoring
'
Comparison
Main Tributary #2 Longitudinal Profile
As -Built (Corrected)
First Year Monitoring
Comparison
Main Tributary #2 Pebble Count
Main Tributary #2 Raw Data
As -Built (Corrected)
First Year Monitoring
1
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First Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
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First Year Monitoring Report: Main Tributary 92
New Garden Road Widening Phase II Project No. P -3741
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New Garden Road Widening Phase I1 Project No. P -3741
Main Tributary #2 - Pebble Count
1 37
Metric mm
Particle
S
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Tot #
% Tot
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<0.062
Silt/Clay
11
100
11.0
11.00
0.062 - 0.125
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1
100
1.0
12.00
0.125 - 0.250
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8
100
8.0
20.00
0.25-0.5
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2
100
2.0
22.00
0.5-1.0
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19
100
19.0
41.00
1.0-2.0
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1
100
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42.00
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0.0
42.00
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3
100
3.0
45.00
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1
100
1.0
46.00
8-11.3
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11
100
11.0
57.00
11.3-16
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13
100
13.0
70.00
16-22.6
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14
100
14.0
84.00
22.6-32
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10
100
10.0
94.00
32-45
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2
100
2.0
96.00
45-64
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3
100
3.0
99.00
64-90
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1
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100.00
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0
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0.0
100.00
180-256
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0
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0.0
100.00
256-362
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0.0
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0
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0.0
100.00
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0
100
0.0
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0
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0.0
100.00
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0
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0.0
100.00
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First Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Water Surface - Main Tributary #2
Project Name: New Garden Road Widening Phase II
�[ Project Location: Greensboro, NC
u Date: 6/28/2010
BM # 1 (ft.)-- 777.02
Height of Height
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1
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1 42
Distance; Point
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Instrument Fore-Sight
Depth
STATION
B.M. # 1
B.S.
1.71
ILL
101.71
F.S.
Elevation
100.00
Corrected Elevation
COMMENTS
0.0
101.71
11.93
89.78
766.80
tail of riffle
13.0
101.71
12.06
89.65
766.67
pool max depth
38.0
101.71
12.01
89.70
766.72
part of glide
59.0
101.71
12.03
89.68
766.70
pool max depth
76.0
101.71
12.12
89.59
766.61
103.0
101.71
12.14
89.57
766.59
head of riffle
122.0
101.71
12.12
89.59
766.61
tail of riffle
138.0
101.71
12.32
89.39
766.41
pool max depth
139.0
101.71
12.36
89.35
766.37
144.0
160.0
101.71
101.71
12.38
12.36
89.33
89.35
766.35
766.37
pool max depth
172.0
101.71
12.39
89.32
766.34
214.0
101.71
12.44
8927
766.29
215.0
101.71
12.45
89.26
766.28
pool max depth
225.0
101.71
12.49
89.22
766.24
246.0
101.71
12.48
89.23
766.25
278.0
101.71
12.48
89.23
766.25
WS Slope (ft. /ft.)
0.002
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First Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Thalweg - Main Tributary #2
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 6/28/2010
Thahveg Slope (ft. /ft.) 0.003
43
BM # 1 (ft.)-- 777.02
Height of
Height
Distance; Point
Back -Sight Instrument Fore-Sight
Depth
STATION
B.S. H.L
F.S.
Elevation Corrected Elevation
COMMENTS
B.M. # 1
1.71 101.71
100.00
0.0
101.71
1216
89.55
766.57
tail of nffle
13.0
101.71
12.92
88.79
765.81
poolmaxdepth
38.0
10171
12.78
88.93
765.95
part of glide
59.0
101.71
12.13
89.58
766.60
poolmaxdepth
76.0
101.71
12.38
89.33
76635
103.0
101.71
14.33
87.38
76440
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122.0
101.71
13.43
88.28
765.30
tail ofriffle
138.0
101.71
12.32
89.39
766.41
poolmaxdepth
139.0
101.71
13.37
88.34
765.36
144.0
101.71
13.98
8773
764.75
pool max depth
160.0
101.71
13.02
88.69
765.71
I72.0
101.71
12.60
89.11
766.13
214.0
101.71
12.58
89.13
766.15
215.0
101.71
13.97
87.74
764.76
pool max depth
225.0
101.71
14.74
86.97
763.99
2460
101.71
13.23
88.48
765.50
278.0
101.71
12.71
89.00
766.02
Thahveg Slope (ft. /ft.) 0.003
43

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First Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Left Top of Bank - Main Tributary #2
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 6/28/2010
Valley Slope (Uft.) 0.009
44
BM # 1(ft.)-- 777 02
Height of
Height
Distance; Point
Back -Sight Instrunient Fore -Sight Depth
STATION
B.S. RL
F.S.
Devotion Corrected Elevation
CONEWNI'S
B.M. # 1
171 101.71
100.00
0.0
101.71
6.67
95.04
772.06
tail of riffle
13.0
101.71
6.52
9519
772.21
pool max depth
38.0
101.71
5.83
95.88
772.90
part of glide
59.0
101.71
6.25
95.46
772.48
pool max depth
76.0
101.71
6.24
95.47
772.49
103.0
101.71
6.47
95.24
772.26
head ofnffle
122.0
101.71
8.42
93.29
770.31
tail of riffle
138.0
101.71
8.99
92.72
769.74
pool max depth
144.0
101.71
8.76
92.95
769.97
pool max depth
160.0
101.71
8.76
92.95
769.97
172.0
101.71
8.89
92.82
769.84
214.0
101.71
8.80
92.91
769.93
225.0
101.71
8.54
93.17
770.19
246.0
101.71
8.85
92.86
769.88
278.0
101.71
8.85
92.86
769.88
Valley Slope (Uft.) 0.009
44

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First Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Left Bankfull - Main Tributary #2
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 6/28/2010
BM # 1 (ft.)-- 777.02
45
Height of
Height
Distance; Pomt
Back -Sight Instnmrent Fore-Sight
Depth
STATION
B.S. ILL
F.S.
Bevation
Corrected Elevation
CONIlIEFIVTS
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100.00
0.0
101.71
9.22
92.49
769.51
tail of riffle
13.0
101.71
9.27
92.44
769.46
poolmaxdepth
38.0
101.71
9.32
92.39
769.41
part of glide
59.0
101.71
9.02
92.69
769.71
pool max depth
76.0
101.71
9.24
92.47
769.49
103.0
101.71
9.24
92.47
769.49
head of riffle
122.0
101.71
9.51
92.20
769.22
tail of riffle
138.0
101.71
9.49
92.22
769.24
pool max depth
144.0
101.71
9.21
92.50
769.52
pool max depth
160.0
101.71
9.30
92.41
769.43
172.0
101.71
9.35
92.36
769.38
214.0
101.71
981
91.90
768.92
225.0
101.71
9.61
92.10
76912
278.0
101.71
9.63
92.08
769.10
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First Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Water Surface - Main Tributary #2
Project Name: New Garden Road Widening Phase H
Project Location: Greensboro, NC
Date: 1/10/2012
WS Slope (ft. /ft.) 0.003
48
BM # 1 (ft.)-- 775.70
Height of
Height
Distance; Point
Back -Sight Instrument Fore -Sight Depth
STATION
B.S. H.L
F.S.
Elevation CorrectedBe-ation
COMMENTS
B.M. # 1
3.26 103.26
100.00
0.0
103.26
11.99
91.27
766.97
tail of riffle
9.0
103.26
11.99
91.27
766.97
pool max depth
32.0
103.26
11.98
91.28
766.98
38.0
103.26
11.97
91.29
766.99
part of glide
59.0
103.26
12.01
91.25
766.95
poolmaxdepth
76.0
103.26
12.40
90.86
766.56
95.0
103.26
12.40
90.86
766.56
100.0
103.26
12.38
90.88
766.58
103.0
103.26
12.40
90.86
766.56
head of riffle
138.0
103.26
12.47
90.79
766.49
pool max depth
139.0
103.26
12.63
90.63
766.33
144.0
103.26
12.58
90.68
766.38
pool max depth
162.0
103.26
12.57
90.69
766.39
172.0
103.26
12.57
90.69
766.39
214.0
103.26
12.60
90.66
766.36
215.0
103.26
12.66
90.60
766.30
pool max depth
225.0
103.26
12.66
90.60
766.30
246.0
103.26
12.63
90.63
766.33
278.0
103.26
12.70
90.56
766.26
WS Slope (ft. /ft.) 0.003
48

First Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II
LONGITUDINAL PROFILE: Thalvveg - Main Tributary #2
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 1/10/2012
Project No. P -3741
Thalweg Slope (ft. /ft.) 0.004
G•
BM # 1 (ft.)-- 775.70
Height of
Height
Distance; Point
Back -Sight Instrument Fore -Sight Depth
STATION
B.S. H.L
F.S.
13evation Corrected Flevati on
CONEWNTS
B.M. # 1
3.26 103.26
100.00
0.0
103.26
12.22
91.04
766.74
tail of riffle
9.0
103.26
13.13
90.13
765.83
pool max depth
32.0
103.26
12.98
90.28
765.98
38.0
103.26
12.98
90.28
765.98
part of glide
59.0
103.26
12.16
91.10
766.80
pool maxdepth
76.0
103.26
12.74
90.52
766.22
95.0
103.26
14.22
89.04
764.74
100.0
103.26
14.18
89.08
764.78
103.0
103.26
14.11
89.15
764.85
head of riffle
122.0
103.26
14.18
89.08
764.78
tail of riffle
138.0
103.26
12.60
90.66
766.36
pool max depth
139.0
103.26
13.46
89.80
765.50
144.0
103.26
13.97
89.29
764.99
pool max depth
162.0
103.26
13.43
89.83
765.53
172.0
103.26
13.15
90.11
765.81
214.0
103.26
12.92
90.34
766.04
215.0
103.26
14.41
88.85
764.55
pool max depth
225.0
103.26
15.25
88.01
763.71
246.0
103.26
13.50
89.76
765.46
278.0
103.26
13.00
90.26
765.96
Thalweg Slope (ft. /ft.) 0.004
G•

'
'
First Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II
LONGITUDINAL PROFILE: Left Bankfull - Main Tributary #2
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 1/12/2012
BM # I (ft.)= 775.70
Height of Height
Distance; Point Back -Sight Instrument Fore -Sight Depth
Project No. P -3741
STATION
B.S. RL F.S. Elevation
Corrected Elevation
COMMENTS
'
B.M. # 1
3.26 103.26 100.00
0.0
103.26 9.33 93.93
769.63
tail of riffle
9.0
103.26 9.18 94.08
769.78
pool max depth
32.0
103.26 9.58 93.68
769.38
'
38.0
103.26 9.49 93.77
769.47
part of glide
59.0
103.26 9.44 93.82
769.52
pool max depth
76.0
103.26 9.58 93.68
76938
100.0
103.26 9.67 93.59
769.29
138.0
103.26 9.67 93.59
769.29
pool max depth
162.0
103.26 9.27 93.99
769.69
172.0
103.26 9.27 93.99
769.69
214.0
103.26 9.34 93.92
769.62
'
246.0
103.26 9.47 93.79
769.49
278.0
103.26 9.85 93.41
769.11
50

' First Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Right Bankfull - Main Tributary #2
Project Name: New Garden Road Widening Phase H
' Project Location: Greensboro, NC
Date: 1/10/2012
'
Distance; Point
STATION
BM # 1 (ft.)= 775.70
Height of Height
Back -Sight Instrument Fore -Sight Depth
B.S. H:L F.S. Elevation Corrected Elevation
CONIMINTS
B.M. # 1
3.26 103.26
100.00
0.0
103.26
9.05
94.21
769.91
tail of riffle
9.0
103.26
8.80
94.46
770.16
pool max depth
32.0
38.0
103.26
103.26
8.77
8.89
94.49
94.37
770.19
770.07
part of glide
59.0
103.26
9.49
93.77
769.47
pool max depth
76.0
103.26
9.47
93.79
769.49
100.0
103.26
9.77
93.49
769.19
'
138.0
103.26
9.35
93.91
769.61
pool max depth
162.0
103.26
9.72
93.54
769.24
172.0
103.26
9.78
93.48
769.18
214.0
103.26
9.59
93.67
769.37
246.0
103.26
9.87
93.39
769.09
278.0
103.26
10.24
93.02
768.72
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First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II
Project No. P -3741
Appendix C
Tributary A Cross Sections
As -Built (Corrected)
First Year Monitoring
Comparison
Tributary A Longitudinal Profile
As -Built (Corrected)
First Year Monitoring
Comparison
Tributary A Pebble Count
Tributary A Raw Data
As -Built (Corrected)
First Year Monitoring
52

First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II
Project No. P -3741
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First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
Tributary A - Pebble Count
1 62
Metric mm
Particle
S
A
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Count
Tot #
% Tot
% Cum
<0.062
Silt/Clay
23
100
23.0
23.00
0.062 - 0.125
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8
100
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31.00
0.125 - 0.250
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5
100
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36.00
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42.00
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6
100
6.0
51.00
8-11.3
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3
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3.0
54.00
11.3-16
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8
100
8.0
62.00
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10
100
10.0
72.00
22.6-32
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7
100
7.0
79.00
32-45
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8
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8.0
87.00
45-64
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5
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5.0
92.00
64-90
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0.0
98.00
1024-2048
Large -Very Large
0
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98.00
Bedrock
Bedrock
2
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1 2.0
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First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Water Surface - Tributary A
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 6/28/2010
WS Slope (ft. /ft.) 0.014
67
BM #I (ft.)-- 777.02
Height of
Height
Distance; Point
Back -Sight Instrument Fore -Sight
Depth
STATION
B.S. H.L
F.S.
Flevadon CorrectedFlevation
CONPAENTS
B.M. # 1
1.71 101.71
100.00
0.0
101.71
9.97
91.74
768.76
head of nffle
10.0
101.71
10.20
91.51
768.53
riffle
13.0
101.71
10.54
91.17
768.19
pool max depth
27.0
101.71
10.80
90.91
767.93
head of riffle
44.0
101.71
11.20
90.51
767.53
tail of riffle
58.0
101.71
11.17
90.54
767.56
pool maxdepth
80.5
101.71
11.41
90.30
767.32
head of riffle
82.0
101.71
11.90
89.81
766.83
tail ofriffle
88.0
101.71
11.99
89.72
766.74
pool max depth
101.0
101.71
11.98
89.73
766.75
pool
115.0
101.71
12.00
89.71
766.73
head of riffle
128.0
101.71
12.00
89.71
766.73
tail of riffle
147.0
101.71
12.03
89.68
766.70
pool max depth
148.0
101.71
12.62
89.09
766.11
head of riffle
154.0
101.71
12.62
89.09
766.11
tail ofriffle
171.0
101.71
12.45
89.26
766.28
poolmaxdepth
185.0
101.71
12.60
89.11
766.13
head of riffle
WS Slope (ft. /ft.) 0.014
67

First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Thalweg - Tributary A
Project Name: New Garden Road Widening Phase II
' Project Location: Greensboro, NC
Date: 6/28/2010
1
I
1
1
1 68
Distance; Point
Back -Sight
BM # 1(ft.)= 777.02
Height of Height
Instrument Fore -Sight Depth
STATION
B.S.
ILL
F.S.
Elevation Corrected Elevation
COMMENTS
B.M. # 1
1.71
101.71
100.00
0.0
101.71
10.15
91.56
768.58
head of riffle
10.0
101.71
10.20
91.51
768.53
riffle
13.0
101.71
11.06
90.65
767.67
poolmaxdepth
27.0
101.71
10.80
90.91
76793
head of riffle
44.0
101.71
11.41
90.30
767.32
tail of riffle
58.0
101.71
11.99
89.72
766.74
poolmaxdepth
80.5
101.71
11.41
90.30
767.32
head of riffle
82.0
101.71
13.00
88.71
76573
tail of riffle
88.0
101.71
13.44
88.27
765.29
pool max depth
101.0
115.0
101.71
101.71
13.80
12.89
87.91
88.82
764.93
765.84
pool
head of riffle
128.0
101.71
13.13
88.58
765.60
tail of riffle
147.0
101.71
12.04
89.67
766.69
poolmaxdepth
148.0
101.71
14.03
87.68
764.70
head of riffle
'
154.0
101.71
14.11
87.60
764.62
tailofnffle
171.0
101.71
12.57
89.14
766.16
poolmaxdepth
185.0
101.71
13.10
88.61
765.63
head of riffle
Thalweg Slope (ft. /ft,)
0.015
1
I
1
1
1 68

First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Left Top of Bank - Tributary A
Project Name: New Garden Road Widening Phase lI
Project Location: Greensboro, NC
Date: 6/28/2010
1 Valley Slope (ft /ft ) 0.002
I
t
1
1
1
1 69
BM # 1 (ft.)= 777.02
Height of
Height
Distance; Point
Back -Sight Instrument Fore-Sight Depth
STATION
B.S. ILL
F.S.
Devation Corrected Devation
CONIl101iTS
B.M. # 1
1.71 101.71
100.00
0.0
101.71
5.69
96.02
773.04
head of riffle
10.0
101.71
5.52
96.19
773.21
riffle
27.0
101.71
5.68
96.03
773.05
head ofnffle
44.0
101.71
5.66
96.05
773.07
tail of riffle
58.0
101.71
5.59
96.12
773.14
pool max depth
62.0
101.71
5.65
9606
773.08
80.5
101.71
5.66
96.05
773.07
head of riffle
88.0
101.71
5.83
95.88
772.90
poolmaxdepth
101.0
101.71
5.92
95.79
772.81
pool
'
115.0
119.0
101.71
101.71
5.88
5.59
95.83
96.12
772.85
773.14
head of riffle
128.0
101.71
5.19
96.52
773.54
tail of riffle
147.0
101.71
5.91
95.80
772.82
pool max depth
154.0
101.71
6.03
9568
772.70
tall of riffle
171.0
101.71
6.03
95.68
772.70
poolmaxdepth
185.0
101.71
603
95.68
772.70
head of riffle
1 Valley Slope (ft /ft ) 0.002
I
t
1
1
1
1 69

fFirst Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Right Bankfull - Tributary A
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 6/28/2010
I
1
1
1
1
1
1
1 70
BM 41 (ft.)= 777.02
Height of
Height
Distance; Point
Back -Sight Instrument Fore-Sight Depth
STATION
B.S. ILL
F.S.
Illevation Corrected Elevation
COMMENTS
B.M. # 1
1.71 101.71
100.00
0.0
101.71
7.14
94.57
771.59
head ofnfile
10.0
101.71
7.09
94.62
771.64
riffle
27.0
101.71
7.67
94.04
771.06
head of riffle
44.0
101.71
7.95
93.76
770.78
tail of riffle
58.0
101.71
8.14
93.57
770.59
poolmaxdepth
80.5
10171
8.69
93.02
770.04
head of riffle
88.0
101.71
8.68
93.03
770.05
poolmaxdepth
101.0
101.71
9.64
92.07
769.09
pool
115.0
101.71
9.35
92.36
769.38
head of riffle
128.0
101.71
9.47
92.24
769.26
tail of riffle
'
147.0
101.71
9.10
92.61
769.63
poolmaxdepth
154.0
10171
9.10
92.61
769.63
tail of riffle
171.0
10I.71
9.47
92.24
769.26
poolmaxdepth
185.0
101.71
9.47
92.24
769.26
head of riffle
I
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1 70

First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
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New Garden Road Widening Phase II
Project No. P -3741
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First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Water Surface - Tributary A
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 1/10/2012
WS Slope (ft. /ft.) 0.016
73
BM # 1 (ft.)= 775 70
Height of
Height
Distance; Point
Back -Sight Instrument Fore -Sight Depth
STATION
B.S. ILL
F.S.
Elevation Corrected Elevation
CONEMENTS
B.M. # 1
2.45 102.45
100.00
0.0
102.45
9.43
93.02
768.72
head of riffle
10.0
102.45
9.60
92.85
768.55
riffle
13.0
102.45
10.04
92.41
768.11
pool max depth
27.0
102.45
10.23
92.22
767.92
head of riffle
44.0
102.45
10.65
91.80
767.50
tail of riffle
58.0
102.45
10.63
91.82
767.52
pool max depth
62.0
102.45
10.63
91.82
767.52
77.0
102.45
10.68
91.77
767.47
head of riffle
82.0
102.45
10.81
91.64
767.34
tail of rife
83.0
102.45
11.35
91.10
766.80
88.0
102.45
11.37
91.08
766.78
pool max depth
101.0
102.45
11.35
91.10
766.80
pool
116.0
102.45
11.37
9108
766.78
head of riffle
119.0
102.45
11.40
91.05
766.75
128.0
102.45
11.38
91.07
766.77
tail ofriffle
147.0
102.45
11.44
91.01
76671
pool max depth
148.0
102.45
11.80
90.65
766.35
head of riffle
154.0
102.45
11.77
90.68
766.38
tail of rife
170.0
102.45
11.80
90.65
766.35
pool max depth
1850
102.45
1180
90.65
766.35
head of riffle
WS Slope (ft. /ft.) 0.016
73

1
1
1
1
1 74
First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II
Project No. P -3741
LONGITUDINAL
PROFILE: Thahveg - Tributary
A
Project Name:
New Garden Road Widening Phase II
1
Project Location:
Greensboro, NC
Date:
1/10/2012
BM # 1 (ft.)-- 775.70
Height of
Height
Distance; Point
Back -Sight Instrument Fore -Sight
Depth
STATION
B.M. # 1
B.S. H.L
F.S.
Flevation Corrected Elevation
CONUVERM
2.45 102.45
100.00
0.0
102.45
9.57
92.88
768.58
head of riffle
10.0
102.45
9.70
92.75
768.45
riffle
13.0
102.45
10.63
91.82
767.52
pool max depth
27.0
102.45
10.39
92.06
767.76
head of riffle
44.0
102.45
10.79
91.66
767.36
tail of rife
58.0
102.45
11.45
91.00
766.70
poolmaxdepth
62.0
102.45
11.17
91.28
766.98
77.0
10245
1081
91.64
767.34
head of riffle
82.0
102.45
10.89
9156
767.26
tail of rife
83.0
102.45
11.35
91.10
766.80
88.0
102.45
12.66
89.79
765.49
pool max depth
101.0
102.45
12.98
89.47
765.17
pool
116.0
102.45
12.20
90.25
765.95
head of riffle
119.0
102.45
12.44
90.01
765.71
128.0
102.45
12.46
89.99
765.69
tail of rife
147.0
102.45
11.54
90.91
766.61
pool max depth
148.0
102.45
13.49
88.96
764.66
head of rife
154.0
102.45
13.50
88.95
764.65
tail of rife
170.0
102.45
12.07
90.38
766.08
pool max depth
185.0
102.45
12.64
89.81
765.51
head of riffle
Thalweg Slope (ft. /ft.)
0.013
1
1
1
1
1 74

First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Left Bankfull - Tributary A
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 1/10/2012
1
1
1
I
I
1
1 75
BM # 1(ft.)= 775.70
Height of
Height
Distance; Point
Back -Sight Instrument Fore -Sight
Depth
STATION
B.S. RL
F.S.
Elevation Corrected Elevation
COMMENTS
B.M. # 1
2.45 102.45
100.00
0.0
102.45
6.83
9562
771.32
head of riffle
10.0
102.45
6.74
95.71
771.41
riffle
27.0
102.45
6.95
95.50
771.20
head of riffle
44.0
102.45
747
94.98
770.68
tail of riffle
62.0
102.45
7.89
94.56
770.26
77.0
102.45
8.39
94.06
769.76
head of riffle
116.0
102.45
9.14
93.31
769.01
head of riffle
119.0
102.45
8.85
93.60
769.30
128.0
102.45
8.98
93.47
769.17
tail of riffle
147.0
10245
8.56
93.89
769.59
pool max depth
170.0
102.45
8.82
93.63
769.33
pool max depth
1
1
1
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1
1 75

First Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Right Bankfull - Tributary A
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 1/10/2012
1
1
1
76
BM # 1 (ft.)= 775.70
Height of
Height
Distance; Point
Back -Sight Instrument Fore-Sight Depth
STATION
B.M. #1
B.S. ILL
2.45 102.45
F.S.
Devation Corrected Oevation
100.00
COMl ENTS
10.0
102.45
6.86
9559
771.29
riffle
27.0
102.45
7.44
95.01
770.71
head of riffle
44.0
102.45
7.19
95.26
770.96
tail of riffle
62.0
102.45
8.14
94.31
770.01
pool max depth
77.0
102.45
785
94.60
770.30
head of riffle
116.0
102.45
8.53
93.92
769.62
head of riffle
'
119.0
102.45
8.63
93.82
769.52
128.0
102.45
8.66
93.79
769.49
tail of riffle
147.0
102.45
8.54
93.91
769.61
pool max depth
170.0
185.0
10245
102.45
8.83
9.13
93.62
93.32
769.32
769.02
pool max depth
head of riffle
1
1
1
76