2007-11-23_HYDROLOGY - M1977300 ‎(2)‎

• Permit No: M1977300
• IBM Index Class Name: HYDROLOGY
• Doc Date: 11/23/2007
• Doc Name: Hydro Eval, Vol. II- Ap. A- Ralston Creek Flow Data
• From: Cotter and Whetstone
• To: DRMS
• Permit Index Doc Type: Hydrology Report
• Email Name: DB2
• Media Type: D
• Archive: No

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Rating Curve for SW-GS
35
30
u- 25
c1
.. 20
0 10 - --------------- -------------
F
5
-------------
0
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75
Stage (feet)
RATING CURVE AND FLOW DATA FOR
STATION SW-GS
1. Rating Curve Calculation (Stage vs Flow Rate)
Location Date Stage (ft) Flow (cfs) slope (m) intercept (b)
SW-GS Base 0 0.00 8.51 0
SW-GS 7/19/1999 0.73 6.21 -58.33 48.7933333
SW-GS 10/20/1998 0.79 2.71 44.79 -32.676552
SW-GS 8/2/1999 1.08 15.70 32.63 -19.535
SW-GS 5/19/1999 1.56 31.36 32.63 -19.54
II. Stage Readings and Computed Flow Rates
Date Location Stage (ft) Flow (cfs)
10/20/1998 SW-GS 0.79 2.71
11/23/1998 SW-GS 0.84 4.95
12/17/1998 SW-GS 0.8 3.16
1/18/1999 SW-GS 0.85 5.40
2/16/1999 SW-GS 0.75 5.04
3/16/1999 SW-GS 0.86 5.85
4/19/1999 SW-GS 1.5 29.40
5/17/1999 SW-GS 1.56 31.36
7/19/1999 SW-GS 0.73 6.21
8/2/1999 SW-GS 1.08 15.70
9/13/1999 SW-GS 0.9 7.64
Calculated Stream Flow for Station SW-GS
Jul-98 Oct-98 Jan-99 Apr-99 Jul-99 Oct-99 Jan-00
35
30
„ 25
rn
U.
20
m
?a
3 15
0
" 10
5
0
Station GS