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 AND FLOW DATA FOR
STATION SW-UC
1. Rating Curve Calculation (Stage vs Flow Rate)
Location Date Stage (ft) Flow (cfs) slope (m) intercept (b)
SW-UC Base 0 0.00 2.62 0
SW-UC 10/20/1998 0.89 2.33 86.94 -75.04
SW-UC 8/2/1999 1.05 16.24 7.73 8.12
SW-UC 5/19/1999 1.72 21.42 7.73 8.12
II. Stage Readings and Computed Flow Rates
Date Location Stage (ft) Flow (cfs)
10/21/1998 SW-UC 0.89 2.33
11/24/1998 SW-UC 0.85 2.23
12/16/1998 SW-UC 0.8 2.09
1/18/1999 SW-UC 0.9 3.20
2/16/1999 SW-UC 0.8 2.09
3/16/1999 SW-UC 0.9 3.20
4/20/1999 SW-UC 1.5 19.72
5/17/1999 SW-UC 1.8 22.04
7/19/1999 SW-UC 0.96 8.42
8/2/1999 SW-UC 1.05 16.24
9/14/1999 SW-UC 1.02 13.63
Rating Curve for SW-UC
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
Stage (feet)
25
N 20
U.
X15
c++a
3 10
0
LL 5
0
Calculated Stream Flow for Station SW-UC
25
20
----------------------- ---------------------------------------------r--- -------- --------- -----------------------r

LL
v 15

R
10
3
----------------------- ----------------------- - -- ------------------ ------------------------

U-
5
0

Jul-98 Oct-98 Jan-99 Apr-99 Jul-99 Oct-99 Jan-00
Station UC