HomeMy WebLinkAboutAppendix IV Monitoring
Appendix IV
DWQ Water Quality
Monitoring Programs
in the
New River Basin
Appendices
DWQ Water Quality Monitoring Programs in the New River Basin
Staff in the Environmental Sciences Section (ESS) and
Regional Offices of DWQ collect a variety of
biological, chemical and physical data. The following
discussion contains a brief introduction to each
program, followed by a summary of water quality data
in the New River basin for that program. For more
detailed information on sampling and assessment of
streams in this basin, refer to the Basinwide Assessment
Report for the New River basin, available on the ESS
website at http://www.esb.enr.state.nc.us/bar.html or by calling (919) 733-9960.
DWQ monitoring programs for the
New River Basin include:
• Benthic Macroinvertebrates
• Aquatic Toxicity Monitoring
• Lake Assessment
• Ambient Monitoring System
Benthic Macroinvertebrate Monitoring
Benthic macroinvertebrates, or benthos, are organisms that live in and on the bottom substrates
of rivers and streams. These organisms are primarily aquatic insect larvae. The use of benthos
data has proven to be a reliable monitoring tool, as benthic macroinvertebrates are sensitive to
subtle changes in water quality. Since macroinvertebrates have life cycles of six months to over
one year, the effects of short-term pollution (i.e., chemical spill) will generally not be overcome
until the following generation appears. The benthic community also integrates the effects of a
wide array of potential pollutant mixtures.
Criteria have been developed to assign a bioclassification to each benthic sample based on the
number of different species present in the pollution intolerant groups of Ephemeroptera
(Mayflies), Plecoptera (Stoneflies) and Trichoptera (Caddisflies), commonly referred to as EPT.
A Biotic Index (BI) value gives an indication of overall community pollution tolerance. Different
benthic macroinvertebrate criteria have been developed for different ecoregions (i.e., mountains,
piedmont, coastal plain and swamp) within North Carolina and bioclassifications fall into five
categories: Excellent, Good, Good-Fair, Fair and Poor.
Overview of Benthic Macroinvertebrate Data
There were 42 benthic samples collected during this assessment period. The following table lists
the total bioclassifications (by subbasin) for all benthos sites in the New River basin. Benthos
sampling may slightly overestimate the proportion of Fair, Poor and Severe stress sites, as DWQ
special studies often have the greatest sampling intensity (number of sites/stream) in areas where
it is believed that water quality problems exist. Many streams also ceased flowing during the
drought of 2001 and 2002. For detailed information regarding the samples collected during this
assessment period, refer to the tables at the end of this appendix.
A-IV-1
Summary of Bioclassifications for All Freshwater Benthic Macroinvertebrate Sites (using the most recent rating
for each site) in the New River Basin
Subbasin Excellent Good Good-Fair Fair Poor Not Rated Total
05-07-01 8 8 4 0 2 0 22
05-07-02 8 2 0 0 1 0 11
05-07-03 4 4 1 0 0 0 9
Total (#) 20 14 5 0 3 0 42
Total (%) 48 33 12 0 7 0 100
Assessing Benthic Macroinvertebrate Communities in Small Streams
The benthic macroinvertebrate community of small streams is naturally less diverse than the
streams used to develop the current criteria for flowing freshwater streams. The benthic
macroinvertebrate database is being evaluated, and a study to systematically look at small
reference streams in different ecoregions is being developed with the goal of finding a way to
evaluate water quality conditions in such small streams.
Presently, a designation of Not Impaired may be used for flowing waters that are too small to be
assigned a bioclassification (less than 4 meters in width) but meet the criteria for a Good-Fair or
higher bioclassification using the standard qualitative and EPT criteria. This designation will
translate into a use support rating of Supporting. However, DWQ will use the monitoring
information from small streams to identify potential impacts to small streams even in cases when
a use support rating cannot be assigned.
DWQ will use this monitoring information to identify potential impacts to these waters even
though a use support rating is not assigned. DWQ will continue to develop criteria to assess
water quality in small streams.
Aquatic Toxicity Monitoring
Acute and/or chronic toxicity tests are used to determine toxicity of discharges to sensitive
aquatic species (usually fathead minnows or the water flea, Ceriodaphnia dubia). Results of
these tests have been shown by several researchers to be predictive of discharge effects on
receiving stream populations. Many facilities are required to monitor whole effluent toxicity
(WET) by their NPDES permit or by administrative letter. The Aquatic Toxicology Unit (ATU)
may also test other facilities. Per Section 106 of the Clean Water Act, the ATU is required to
test at least 10 percent of the major discharging facilities over the course of the federal fiscal year
(FFY). However, it is ATU’s target to test 20 percent of the major dischargers in the FFY. This
means that each major facility would get evaluated over the course of their five-year permit.
There are no requirements or targets for minor dischargers.
In addition, the ATU maintains a compliance summary for all facilities required to perform tests
and provides monthly updates of this information to regional offices and DWQ administration.
A-IV-2
Ambient toxicity tests can be used to evaluate stream water quality relative to other stream sites
and/or a point source discharge.
Six NPDES permits in the New River basin currently require WET testing. All six permits have
a WET limit. The number of facilities required to monitor WET has increased steadily since
1987, the first year that WET limits were written into permits in North Carolina. The
compliance rate has risen as well. Since 1996, the compliance rate has stabilized at
approximately 90 percent. The following graph summaries WET monitoring compliance in the
New River basin from 1986 to 2003. Facilities with toxicity problems during the most recent
two-year review period are discussed in subbasin chapters.
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No. Facilities % Meeting Permit Limit
NPDES facility WET compliance in the New River basin, 1986-2003. The compliance values were
calculated by determining whether facilities with WET limits were meeting their ultimate permit limits
during the given time period, regardless of any SOCs in force.
Lakes Assessment Program
One lake (Appalachian State University Lake) was sampled as part of the Lakes Assessment
Program. In 2003, ASU Lake was sampled three times during the summer months (June, July
A-IV-3
A-IV-4
and August). Surface physical data and photic zone chemistry data collected from 1998 to 2003
indicate that the lake remains oligotrophic, and no parameters were elevated.
Ambient Monitoring System
The Ambient Monitoring System (AMS) is a network of stream, lake and estuarine stations
strategically located for the collection of physical and chemical water quality data. North
Carolina has more than 378 water chemistry monitoring stations statewide, including 7 stations
in the New River basin. Between 23 and 32 parameters are collected monthly at each station.
The locations of these stations are listed in the following table and shown on individual subbasin
maps. Notable ambient water quality parameters are discussed in the subbasin chapters. Refer
to the 2003 New River Basinwide Assessment Report at http://www.esb.enr.state.nc.us/bar.html for
more detailed analysis of ambient water quality monitoring data.
Locations of Ambient Monitoring Stations in the New River Basin by Subbasin
Subbasin/
Map Code
Station
Number
Waterbody/
Location County Class
05-07-01
K2100000 S Fork New R. at US 221 and 421 at Perkinsville Ashe C +
K3250000 S Fork New R. at NC 16 and 88 near Jefferson Ashe WS-IV HQW
K4500000 S Fork New R. at NC 221 near Scottville Ashe B ORW
05-07-02
K7500000 N Fork New R. at SR 1573 at Crumpler Ashe C +
05-07-03
K7900000 New R. at SR 1345 at Amelia Alleghany C ORW
K9700000 Little R. at SR 1433 Hooker Rd -- Edwards Crossroads Alleghany C
K9900000 Little R. at NC18 near Blevins Crossroads Alleghany C ORW
A-IV-5
Benthic Macroinvertebrate Data Collected in the New River Basin, 1983 – 2003
Waterbody Location County Index No. Date ST EPT BI EPT BI Rating
05-07-01
M Fk S Fk New R US 321 & Blue
Ridge Pkwy
Watauga 10-1-2-(6) 11/8/89 --- 18 --- 3.54 Fair
M Fk S Fk New R US 321 & Gold
Mine Cr
Watauga 10-1-2-(6) 11/8/89 --- 32 --- 3.39 Good
M Fk S Fk New R SR 1522 Watauga 10-1-2-(15) 8/20/03 --- 24 --- 3.25 Good-Fair
8/17/98 --- 31 --- 3.13 Good
7/12/93 --- 37 --- 3.10 Excellent
E Fk S Fk New R SR 1522 Watauga 10-1-3-(8) 8/20/03 --- 31 --- 3.07 Good
8/17/98 --- 32 --- 3.46 Good
7/12/93 --- 37 --- 3.49 Excellent
7/12/93 --- 37 --- 3.10 Excellent
S Fk New R Hunting Ln Watauga 10-1-(3.5) 7/26/88 --- 27 --- 4.04 Good-Fair
S Fk New R US 421/221 Watauga 10-1-(3.5) 8/20/03 67 24 5.45 4.80 Good-Fair
8/17/98 71 22 5.70 4.17 Good-Fair
7/21/93 69 18 6.22 3.89 Fair
7/26/88 72 26 6.30 4.55 Good-Fair
7/24/86 70 18 6.92 5.09 Fair
8/8/84 49 16 6.27 4.08 Fair
S Fk New R SR 1355 Watauga 10-1-(3.5) 7/26/88 --- 33 --- 4.46 Good
S Fk New R SR 1352 Watauga 10-1-(3.5) 7/26/88 98 41 5.28 4.03 Good
Winkler Creek SR 1549 Watauga 10-1-4-(3.5) 8/21/03 --- 39 --- 2.35 Excellent
8/17/98 --- 34 --- 2.96 Good
7/12/93 --- 37 --- 2.19 Excellent
Howard Cr SR 1306 Watauga 10-1-9-(6) 3/6/90 --- 36 --- 2.15 Good
Howard Cr SR 1328 Watauga 10-1-9-(6) 8/20/03 --- 35 --- 2.35 Good
8/17/98 --- 40 --- 2.77 Excellent
7/13/93 102 52 3.91 2.90 Excellent
7/26/88 --- 38 --- 3.34 Excellent
Meat Camp Cr SR 1340 Watauga 10-1-10 8/21/03 --- 32 --- 1.85 Good
Meat Camp Cr SR 1335 Watauga 10-1-10 3/9/90 --- 42 --- 2.39 Good
Meat Camp Cr SR 1333 Watauga 10-1-10 8/20/03 --- 35 --- 2.81 Good
8/17/98 --- 39 --- 2.79 Excellent
7/13/93 --- 31 --- 2.68 Good
3/5/90 --- 37 --- 2.63 Good
Norris Fk SR 1337 Watauga 10-1-10-2 8/20/03 --- 45 --- 1.56 Excellent
Grassy Cr SR 1351 Ashe 10-1-14 3/6/90 --- 40 --- 2.85 Good
Elk Cr NC 194 Ashe 10-1-15 4/9/96 --- 39 --- 3.49 Excellent
Pine Orchard Cr SR 1369 Watauga 10-1-15-1 8/21/03 --- 41 --- 1.63 Excellent
S Fk New R US 221 Ashe 10-1-(20.5) 7/14/93 116 49 4.72 3.60 Excellent
S Fk New R SR 1169 Ashe 10-1-(20.5) 8/21/03 98 45 4.19 3.33 Excellent
8/18/98 101 48 4.68 3.57 Excellent
Mill Cr SR 1109 Ashe 10-1-18 3/6/90 --- 33 --- 2.69 Good-Fair
S Fk New R NC 16/88 Ashe 10-1-(20.5) 8/22/03 104 58 3.58 3.12 Excellent
8/18/98 95 48 4.03 3.27 Excellent
7/14/93 104 51 3.42 2.83 Excellent
7/11/90 97 50 3.84 3.19 Excellent
8/6/87 105 50 4.30 3.43 Excellent
Old Field Cr SR 1106 Ashe 10-1-22 4/9/96 --- 44 --- 2.13 Excellent
3/6/90 --- 42 --- 2.42 Excellent
W Pr Old Field Cr SR 1112 Ashe 10-1-22-1 7/14/93 83 39 3.66 2.74 Excellent
5/14/90 --- 42 --- 1.98 Excellent
Gap Cr US 221 Ashe 10-1-23-(0.5) 4/8/96 --- 29 --- 2.98 Good-Fair
Pine Swamp Cr SR 1179 Ashe 10-1-24 3/6/90 --- 31 --- 2.55 Good-Fair
Pine Swamp Cr Off SR 1179 Ashe 10-1-24 8/19/03 --- 30 --- 3.14 Good
Beaver Cr SR 1181 Ashe 10-1-25 3/6/90 --- 37 --- 2.87 Good
S Beaver Cr SR 1147 Ashe 10-1-25-2 8/21/03 --- 31 --- 2.68 Good
Obids Cr SR 1192 Ashe 10-1-27-(2) 8/19/03 --- 32 --- 3.16 Good
Bear Cr NC 18 Ashe 10-1-28 3/7/90 --- 35 --- 2.12 Good
Roan Cr SR 1588 Ashe 10-1-31-(2) 8/18/03 --- 44 --- 3.02 Excellent
8/18/98 --- 39 --- 2.74 Excellent
7/14/93 --- 39 --- 3.10 Excellent
Naked Cr NC 16/88 Ashe 10-1-32 8/19/03 57 23 5.68 4.85 Good-Fair
8/18/98 71 32 5.28 4.11 Good-Fair
7/14/93 84 36 4.74 3.91 Good
A-IV-6
Waterbody Location County Index No. Date ST EPT BI EPT BI Rating
7/29/86 78 29 5.33 4.17 Good-Fair
Naked Cr Old SR 1585 Ashe 10-1-32 8/19/03 70 30 4.90 4.11 Good-Fair
8/17/98 49 13 7.53 5.12 Poor
7/15/93 54 18 6.79 5.33 Fair
7/29/86 41 6 7.94 5.34 Poor
Dog Cr SR 1592 Ashe 10-1-33 3/7/90 --- 32 --- 2.92 Good
S Fk New R US 221 Ashe 10-1-(33.5) 8/23/03 112 47 4.50 3.42 Excellent
8/20/98 112 55 4.27 3.31 Excellent
7/15/93 103 46 4.07 2.96 Excellent
5/14/90 --- 59 --- 2.83 Excellent
3/7/90 84 48 3.83 2.78 Good
8/9/89 95 44 4.26 3.63 Excellent
8/5/87 101 45 4.71 3.44 Excellent
8/7/85 92 38 5.44 3.61 Good-Fair
5/29/85 133 63 3.96 3.15 Excellent
2/18/85 102 45 4.32 3.20 Good
12/11/84 110 47 4.24 3.12 Good
8/8/83 95 42 4.25 3.53 Good
Peak Cr Off SR 1599 (Ab
Ore Knob)
Ashe 10-1-35 8/18/03 --- 31 --- 2.53 Good
8/19/98 --- 35 --- 2.93 Good
4/8/96 74 42 3.60 2.59 Excellent
7/15/93 --- 35 --- 2.74 Good
4/15/91 101 50 3.43 2.70 Excellent
3/9/90 --- 38 --- 2.46 Good
Peak Cr Off SR 1599 (Be
Ore Knob)
Ashe 10-1-35 8/18/03 --- 6 --- 2.50 Poor
1/13/99 --- 6 --- 1.98 Poor
8/19/98 --- 23 --- 3.42 Good-Fair
4/8/96 30 19 3.67 2.09 Fair
7/15/93 --- 4 --- 3.75 Poor
4/15/91 46 22 4.02 2.96 Fair
3/7/90 --- 6 --- 2.05 Poor
Peak Cr SR 1599 Ashe 10-1-35 1/13/99 --- 9 --- 3.53 Poor
4/8/96 18 8 3.95 1.96 Poor
4/15/91 39 17 3.79 2.07 Fair
Peak Cr SR 1595 Ashe 10-1-35 4/8/96 16 8 4.17 2.55 Poor
4/16/91 31 11 4.82 2.16 Fair
L Peak Cr SR 1595 Ashe 10-1-35-4 8/19/03 --- 6 --- 1.94 Poor
8/19/98 --- 7 --- 2.00 Poor
4/8/96 --- 7 --- 3.11 Poor
4/16/91 --- 5 --- 2.02 Poor
Nathans Cr SR 1596 Ashe 10-1-36 3/7/90 --- 24 --- 2.72 Good-Fair
Nathans Cr Off US 221 Ashe 10-1-36 8/19/98 --- 29 --- 3.10 Good-Fair
5/11/98 --- 38 --- 3.87 Good
Cranberry Cr SR 1609 Ashe 10-1-37 5/13/98 81 43 4.40 3.21 Good
Cranberry Cr SR 1603 Ashe 10-1-37 8/18/03 106 52 3.94 3.07 Excellent
8/19/98 79 42 3.90 3.13 Excellent
Cranberry Cr SR 1600 Ashe 10-1-37 7/15/93 --- 46 --- 3.16 Excellent
3/7/90 --- 37 --- 2.89 Good
Meadow Fk Off SR 1193 Ashe 10-1-37-2 5/12/98 91 56 2.77 1.68 Excellent
8/20/98 64 41 2.57 1.42 Excellent
Meadow Fk SR 1145 Ashe 10-1-37-2 5/13/98 88 50 3.48 2.44 Excellent
Piney Fk SR 1149/NC 18 Ashe 10-1-37-3 5/12/98 72 35 3.47 1.99 Good
Reeves Br NC 18/13 Ashe 10-1-37-3-2 8/19/98 85 40 3.66 2.97 Excellent
5/12/98 94 54 3.64 2.96 Excellent
Prathers Cr SR 1300 Alleghany 10-1-38 3/7/90 --- 33 --- 3.07 Good-Fair
05-07-02
N Fk New R SR 1100 Ashe 10-2-(1) 8/19/03 80 44 4.0 3.50 Excellent
08/17/98 96 52 4.11 3.33 Excellent
7/29/93 102 50 3.94 3.01 Excellent
3/14/89 --- 43 --- 2.9 Good
Hoskin Fk NC 88/SR 1119 Ashe 10-2-7 8/19/03 --- 37 --- 2.91 Excellent
8/17/98 --- 35 --- 3.7 Good
7/23/93 --- 31 --- 3.85 Good
N Fk New R SR 1340 Ashe 10-2-(12) 9/14/89 99 48 4.23 3.01 Good
N Fk New R SR 1644 Ashe 10-2-(12) 8/21/03 72 45 3.67 3.3 Excellent
8/19/98 87 50 3.83 2.95 Excellent
7/28/93 93 46 3.99 2.94 Excellent
A-IV-7
Waterbody Location County Index No. Date ST EPT BI EPT BI Rating
3/8/90 89 53 3.39 2.81 Excellent
3/14/89 --- 34 --- 2.64 Good
N Fk New R NC 16 Ashe 10-2-(12) 8/21/03 80 48 3.76 3.43 Excellent
8/19/98 87 47 4 3.04 Excellent
7/28/93 116 57 3.93 2.56 Excellent
3/14/89 90 47 3.96 2.63 Good
8/9/89 101 45 4.38 3.68 Excellent
8/5/87 99 45 4.48 3.33 Excellent
8/7/85 87 33 4.89 3.29 Good
8/8/83 88 41 3.78 2.97 Excellent
Three Top Cr SR 1100 Ashe 10-2-13 8/19/03 --- 35 --- 2.9 Good
8/17/98 77 41 4.35 3.55 Good
7/29/93 95 48 3.81 2.95 Excellent
3/14/89 --- 38 --- 2.57 Good
Long Hope Cr SR 1100 Ashe 10-2-13-3 3/8/90 --- 32 --- 1.64 Good
Big Laurel Cr SR 1322 Ashe 10-2-14 3/8/90 --- 32 --- 2.43 Good
Big Laurel Cr SR 1315 Ashe 10-2-14 12/11/84 83 35 4.28 2.97 Good
Big Laurel Cr NC 88 Ashe 10-2-14 8/19/03 --- 38 --- 2.92 Excellent
7/17/98 --- 40 --- 3.66 Excellent
7/29/93 --- 48 --- 3.42 Excellent
Rich Hill Cr NC 88 Ashe 10-2-15 7/28/93 --- 38 --- 3.4 Excellent
Buffalo Cr SR 1125/1133 Ashe 10-2-20 7/29/86 82 38 3.4 3.09 Good
8/19/85 74 38 4.11 3.13 Good
Buffalo Cr Ab L buffalo Cr Ashe 10-2-20 5/30/85 87 38 4.59 2.9 Good
Buffalo Cr NC 88/194 Ashe 10-2-20 8/19/03 --- 36 2.13 2.81 Excellent
8/18/98 --- 26 --- 3.99 Good-Fair
7/13/93 --- 38 --- 3.24 Excellent
L Buffalo Cr US 221 Ashe 10-2-20-1 5/29/85 24 4 7.65 3.9 Poor
Little Buffalo Cr Nr SR 1153 Ashe 10-2-20-1 8/20/03 21 6 6.58 4.11 Poor
8/18/98 39 14 7.11 5.38 Fair
7/13/93 24 0 8.31 0 Poor
2/19/85 22 5 8.36 2.12 Poor
5/29/85 26 5 8.31 1.75 Poor
L Buffalo Cr 2.6 mi be WWTP Ashe 10-2-20-1 2/19/85 44 16 6.7 4.73 Fair
UT L Buffalo Cr Ab WWTP Ashe 10-2-20-1 7/13/93 27 6 7.85 2.24 Poor
2/18/85 22 4 8.18 2.14 Poor
5/29/85 27 7 7.86 3.66 Poor
Big Horse Cr SR 1362 Ashe 10-2-21-(4.5) 3/8/90 --- 33 --- 2.18 Good-Fair
Big Horse Cr SR 1644/NC 194 Ashe 10-2-21-(7) 8/19/03 89 50 3.94 3.42 Excellent
8/18/98 103 56 4.23 3.23 Excellent
7/28/93 129 56 4.13 2.85 Excellent
3/14/89 --- 41 --- 2.69 Good
Little Horse Cr SR 1334 Ashe 10-2-21-8 8/19/03 --- 33 --- 3.02 Good
8/18/98 --- 35 --- 3.78 Good
L Phoenix Cr Off SR 1573 Ashe 10-2-23 5/11/98 72 41 3.35 2.46 Good
Silas Cr SR 1544 Ashe 10-2-24 8/18/98 --- 31 --- 2.61 NR
5/11/98 73 40 3.37 2.15 Good
7/28/93 --- 39 --- 2.76 NR
Old Field Cr SR 1537 Ashe 10-2-26 05/98 77 36 3.60 2.31 Good
Helton Cr SR 1536 Ashe 10-2-27 8/18/03 --- 40 --- 3.12 Excellent
8/18/98 --- 37 --- 3.13 Excellent
Helton Cr SR 1539 Ashe 10-2-27 3/14/89 --- 34 --- 2.67 Good
05-07-03
New R SR 1345 Alleghany 10 8/21/03 86 51 3.55 3.13 Excellent
8/19/98 73 37 4.4 3.31 Good
7/26/93 102 47 4.76 3.72 Excellent
7/11/90 99 49 4.89 3.38 Good
8/10/89 97 43 4.2 3.61 Good
7/25/88 104 42 5.37 4.12 Good
8/5/87 99 41 4.87 3.72 Good
8/6/86 123 43 5.43 4.23 Good
7/1/85 113 45 5.48 4.05 Good
8/8/84 100 45 4.34 3.59 Excellent
8/8/83 105 50 4.61 3.84 Excellent
Elk Cr SR 1344 Alleghany 10-6-(2) 8/18/03 --- 34 --- 3.51 Good
8/20/98 --- 34 --- 3.55 Good
7/26/93 --- 36 --- 3.6 Excellent
Pine Swamp Cr SR 1128 Alleghany 10-9-5 8/18/03 --- 26 --- 3.64 Good-Fair
8/20/98 --- 34 --- 3.58 Good
A-IV-8
Waterbody Location County Index No. Date ST EPT BI EPT BI Rating
7/27/93 --- 33 --- 3.64 Good
Little R Be NC 18/SR
1141
Alleghany 10 5/13/98 71 40 2.46 1.74 Good
Little R SR 1128 Alleghany 10-9-(6) 8/18/03 75 36 4.04 3.52 Good
8/20/98 72 37 3.94 3.18 Good
7/26/93 84 45 3.37 2.62 Excellent
3/15/89 --- 43 --- 2.76 Good
Little R SR 1424 Allegheny 10-9-(6) 8/21/03 104 49 4.12 3.23 Excellent
8/20.98 80 41 3.93 2.95 Excellent
7/26/93 98 48 3.97 2.92 Excellent
3/15/89 --- 19 --- 3.26 Fair
Little R NC 18 Allegheny 10-9-(6) 8/20/03 89 47 3.96 3.4 Excellent
8/20/98 84 46 3.62 2.85 Excellent
7/27/93 89 49 3.78 2.93 Excellent
7/11/90 93 44 4.36 3.23 Excellent
3/15/89 106 56 3.75 2.61 Excellent
7/25/88 95 45 4.5 3.23 Excellent
8/6/86 111 46 4.5 3.1 Good
8/9/84 109 49 3.98 3.16 Excellent
Bledsoe Cr SR 1172 Allegheny 10-9-7 8/20/03 --- 30 --- 3.39 Good
8/19’98 --- 21 --- 4.68 Good-Fair
7/26/93 --- 33 --- 3.43 Good
Glade Cr SR 1422 Allegheny 10-9-9 8/20/03 82 42 4.39 4.0 Good
Glade Cr SR 1422
farther
dwnstrm
Allegheny 10-9-9 11/5/03 --- 35 --- 2.84 Good
Brush Cr SR 1422 Allegheny 10-9-10 8/20/03 83 42 3.93 3.34 Excellent
8/20/98 62 36 4.12 3.69 Good
7/27/93 96 40 4.78 3.5 Good
Laurel Br Off NC 21 Allegheny 10-9-10-2 9/3/92 --- 5 --- 6.39 Poor
8/31/88 --- 15 --- 3.43 Fair
8/31/88 --- 8 --- 2.77 Poor
Laurel Br SR 1105 Allegheny 10-9-10-2 8/18/03 66 33 4.13 3.53 Good
8/21/98 49 28 3.78 2.9 Good
9/3/92 --- 14 --- 4.52 Fair
8/16/89 --- 11 --- 4.0 Fair
8/31/88 --- 22 --- 2.83 Good-Fair
12/6/88 --- 17 --- 3.83 Fair
L Glade Br At Parkway Allegheny 10-9-10-3 9/2/92 99 46 3.4 2.43 Excellent
L Glade Br Be NC 21 Allegheny 10-9-10-3 9/2/92 92 46 3.76 2.71 Excellent
Crab Cr SR 1450 Allegheny 10-9-12 11/5/03 --- 33 --- 3.71 Good