20190726 Ver 1_More Info Received_20190709

iRiffleTypicalCross Sect n
Cross Section -Typical RIFFLE
100.00
100.50
TERRACE ELEVATION
101.00
10150 New Bankfull Elevation _
102.00
.-
102.50 --+-
•
103.00 —I--•--------_ _____ •/
103.50 "+�`--- - --+—�
104.00
104.50
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
.
N m a ,, n m rn o ti ry m 0n en m o .n N
,-1 .-i ,--1r,-1rl rl ,--1 ,-1l N N N N N N N N N N N N N m m m
Proposed —11.—Existing
Regional Curve Estimates:
Drainage Area = 1.7 miles2 New Channel Dimensions:
Bankfull riffle cross-section area = 28.9ft2 Bankfull Width = 12.0'
Bankfull discharge (cfs) = 144.9cfs Bankfull Max. Depth = 2.0'
Bankfull mean depth —riffle = 1.29ft Bankfull Mean Depth = 1.5'
Bankfull width = 22.3ft

Typical CPool Structure
Cross Section -Typical POOL
100.00 TERRACE ELEVATION
101.00 ' '
102.00 Bankfull Elevation ____- ' BANK MASHED
DOWN BY EXCAVATOR
103.00
r.i...... . ----------
104 00
rr. _104.00 ......
.1.4....7.. .......
I I ��..
....
• yam—�� __♦'err
. ••.....
106.00 —
107.00
0 0 0 0 0 0 0 c 0 0 0 0 0 0 0 0 0 0 0 0 0
en ,r In tO IC 00 Cl c . C T In to n 06 ai 0 - C T
—1 ri r-1 r-1 ri ri —1 r N N N N C N N N N m m Cr m
Existing —4—Proposed
New Pool Dimensions:
Bankfull Width: 12.0'
Bankfull Max. Depth: 3.8'
Bankfull Mean Depth: 2.6'

Blue Ridge Ecoregion 66: Estimated Bankfull Discharge
O
O O 0,*,.
•
Regression: NC + TN 0 • '• O
y = 96.10.765 O •,
.•
R2 = 0.94 ••'
I 00 O 0 O
1000
‘4 •
.•.
UO
V • 0
a) 0 -••••V O 0
CD , r )
V in O J
U
VI
C0 ••
_ •• O
04. •0
•c
c�
100 p O �.t••• O. O
w
a O O O ,- '• O
E
Vl ••
LU •.
.•
0.•
•'
0
10
0.1 1.0 10.0 100.0
Watershed Drainage Area (mit)

Blue Ridge Ecoregion 66: Bankfull Riffle Width
100.0 Regression: NC + TN 0 _,:
lat)
Y = 18.0)0m° 00 '''•-
.;_
R2 = 0.95 ''� 0
80.0...„..d5 0 0
rt
.•
w .'
b o
E ..a o
10.00 ';
'' 0
ea
I
1.0 I I
0.1 1.0 10.0 100.0
Watershed Drainage Area (m12)

Blue Ridge Ecoregion 66: Bankfull Riffle Mean Depth
10.0
I
0
I I0
Regression: NC + TN 0 _ 0'`�•1
_ _
y = 1.10x°.301 0 . •O••'.�•• 0
•
R2 = 0.93 O .••• •0
0. .0' • ° •
.0' • 0 ' .
s
+•1 ••I.,, 0 00
CL0:1) Pi8g
.
C6).. **GliS
CO
20
1.0 0 l O, •Q'•' 0
il
E
1.1C
cV 0
CO
0.1
0.1 1.0 10.0 100.0
Watershed Drainage Area (mit)

Blue Ridge Ecoregion 66: Bankfull Riffle Cross-Section Area
1000
o9,•
Regression: NC + T ,. •�''
= 19.9x°.6 •-
:6 .
o ..•
e
IV 00 ce
100
rel • .,..910 6 o
II I► #
a* P.- •
o � +os „ea
F
•- .*i 13
w
141 oo,
VI • 0
v, 0 00..,•67
10 �e a*
. .
w ',
00-
`` 0
i
C
in
co
1
0.1 1.0 10.0 100.0
Watershed Drainage Area (rn 2)

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