Attachment B

1
Attachment B Water Quality Duration Curves for
the Lower Eel River Watershed
2
Eel River at SR 67 Bridge Fixed Station Site WQ
Duration Curve (1991-2001 Monitoring Data)Site
31 (WWE090-0001)
Low Flows
High Flows
Moist Conditions
Mid-range Flows
Dry Conditions
Office of Water Quality Total Maximum Daily Load
Geometric Mean of the 2001 Data 639.80
1,208 square miles
IDEM Data USGS Gage Duration Interval
3
Eel River Including Connelly DitchWQ Duration
Curve (1996 2001 Monitoring Data)Site 14
(WWE090-0004)
High Flows
Moist Conditions
Dry Conditions
Low Flows
Mid-range Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean of 2001 Data 915.03
1060 square miles
IDEM Data USGS Gage Duration Interval
4
Eel River Including Splunge CreekWQ Duration
Curve (2001 Monitoring Data)Site 4
(WWE090-0014)
Low Flows
High Flows
Moist Conditions
Mid-range Flows
Dry Conditions
Office of Water Quality Total Maximum Daily Load
Geometric Mean 487.83
998 square miles
IDEM Data USGS Gage Duration Interval
5
Birch Cr above Crooked Cr and Brush Cr at SR
46WQ Duration Curve (1991-2001 Flow Data 1996
E. coli Data)Site 1 (WWE080-0003)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
39.2 square miles
IDEM Data USGS Gage Duration Interval
6
Birch Cr below Crooked Cr and Brush Cr at
CR300SWQ Duration Curve (1991-2001 Flow Data
2001 E. coli Data)Site 2 (WWE080-0009)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 252.29
64.8 square miles
IDEM Data USGS Gage Duration Interval
7
Splunge Cr at mouth on CR535W-CR550WWQ Duration
Curve (1991-2001 Flow Data 1996 E. coli
Data)Site 3 (WWE090-0002)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
46.1 square miles
IDEM Data USGS Gage Duration Interval
8
Unnamed Trib. 1 to Connelly DitchWQ Duration
Curve (1991-2001 Flow Data 2001 E. coli
Data)Site 05 (WWE090-0033)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 305.58
3.12 square miles
IDEM Data USGS Gage Duration Interval
9
Unnamed Trib. 2 to Connelly Ditch at CR500S
CR100EWQ Duration Curve (1991-2001 Flow Data
2001 E. coli Data)Site 06 (WWE090-0034)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 678.20
1.56 square miles
IDEM Data USGS Gage Duration Interval
10
Connelly Ditch at CR50EWQ Duration Curve
(1991-2001 Flow Data 2001 E. coli Data)Site
07 (WWE090-0035)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 1004.31
6.24 square miles
IDEM Data USGS Gage Duration Interval
11
Connelly Ditch at CR600SWQ Duration Curve
(1991-2001 Flow Data 2001 E. coli Data)Site
08 (WWE090-0036)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 192.65
12.48 square miles
IDEM Data USGS Gage Duration Interval
12
Connelly Ditch upstream of Clay City Trib. on SR
246WQ Duration Curve (1991-2001 Flow Data
2001 E. coli Data)Site 09 (WWE090-0038)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 63.90
15.6 square miles
IDEM Data USGS Gage Duration Interval
13
Connelly Ditch at CR1100SWQ Duration Curve
(1991-2001 Flow Data 2001 E. coli Data)Site
11 (WWE090-0039)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 85.50
28.08 square miles
IDEM Data USGS Gage Duration Interval
14
Connelly Ditch near mouth at CR1200SWQ Duration
Curve (1991-2001 Flow Data 1996 2001 E. coli
Data)Site 1213 (WWE090-0003 WWE090-0040)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean of 1996 Data 246.76
31.2 square miles
IDEM Data USGS Gage Duration Interval
15
Connelly Ditch at CR400S near River RoadWQ
Duration Curve (1991-2001 Flow Data 2001 E.
coli Data)Site 15 (WWE090-0032)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 203.16
4.68 square miles
IDEM Data USGS Gage Duration Interval
16
White Oak Cr at CR1250SWQ Duration Curve
(1991-2001 Flow Data 2001 E. coli Data)Site
16 (WWE090-0021)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 218.16
9.6 square miles
IDEM Data USGS Gage Duration Interval
17
Lagoon Creek at CR850SWQ Duration Curve
(1991-2001 Flow Data 2001 E. coli Data)Site
21 (WWE090-0023)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 285.09
23.9 square miles
IDEM Data USGS Gage Duration Interval
18
Eel River Above Turkey Creek at SR 157WQ
Duration Curve (1991 - 2001 Flow Data)Site
23 (WWE090-0024)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 816.93
1,131 square miles
IDEM Data USGS Gage Duration Interval
19
Lick Creek at CR150S, East of Bond RdWQ Duration
Curve (1991-2001 Flow Data 2001 E. coli
Data)Site 24 (WWE090-0025)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 150.47
8.16 square miles
IDEM Data USGS Gage Duration Interval
20
Lick Creek at CR300SWQ Duration Curve
(1991-2001 Flow Data 2001 E. coli Data)Site
25 (WWE090-0026)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 147.28
19.525 square miles
IDEM Data USGS Gage Duration Interval
21
Hauser Creek a Trib. of Lick Creek at CR350SWQ
Duration Curve (1991-2001 Flow Data 2001 E.
coli Data)Site 26 (WWE090-0027)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 106.20
7.875 square miles
IDEM Data USGS Gage Duration Interval
22
Lick Creek at CR450SWQ Duration Curve
(1991-2001 Flow Data 2001 E. coli Data)Site
27 (WWE090-0028)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 342.69
32.2 square miles
IDEM Data USGS Gage Duration Interval
23
Lick Creek above Beech Creek (Need Ditch-Beach
Creek) at CR750SWQ Duration Curve (1991-2001
Flow Data 1996 E. coli Data)Site 28
(WWE090-0006)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
38.8 square miles
IDEM Data USGS Gage Duration Interval
24
Beech Creek (Need Ditch-Beach Creek) on Arney
RdWQ Duration Curve (1991-2001 Flow Data 2001
E. coli Data)Site 29 (WWE090-0029)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 674.23
6.01 square miles
IDEM Data USGS Gage Duration Interval
25
Brush Creek at CR700SWQ Duration Curve
(1991-2001 Flow Data 2001 E. coli Data)Site
30 (WWE090-0030)
Moist Conditions
Mid-range Flows
Dry Conditions
Low Flows
High Flows
Office of Water Quality Total Maximum Daily Load
Geometric Mean 295.33
3.09 square miles
IDEM Data USGS Gage Duration Interval