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

RATING CURVE AND FLOW DATA FOR
STATION S W-UP
1. Rating Curve Calculation (Stage vs Flow Rate)
Location Date Stage (ft) Flow (cfs) slope (m) intercept (b)
SW-UP Base 0 0.00 2.12 0
SW-UP 10/20/1998 0.82 1.74 57.54 -45.44
SW-UP 8/2/1999 1.08 16.7 23.82 -9.03
SW-UP 5/19/1999 1.58 28.61 23.82 -9.03
II. Stage Readings and Computed Flow Rates
Date Location Stage (ft) Flow (cfs)
10/21/1998 SW-UP 0.82 1.74
12/21/1998 SW-UP 0.8 1.70
1/19/1999 SW-UP 0.775 1.64
2/16/1999 SW-UP 0.85 3.47
3/16/1999 SW-UP 0.85 3.47
4/20/1999 SW-UP 1.08 16.70
5/18/1999 SW-UP 1.7 31.47
7/19/1999 SW-UP 0.84 2.89
8/2/1999 SW-UP 1.08 16.70
9/14/1999 SW-UP 0.9 6.34
•
0-
Rating Curve for SW-UP
35
---------------------------------------------------------
30
U)
LL 25
v I
20
41 ---------- ---
r
X15
3
010 '
5
0
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75
Stage (feet)
Calculated Stream Flow for Station SW-UP
35
30
25
U)
U.
v
20
3 15 ----------------------- ---------------------- --- ------------------ -
0
LL
10 '
-------------------- --- ---------------------
5
0
Jul-98 Oct-98 Jan-99 Apr-99 Jul-99 Oct-99 Jan-00
Station UP