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-BDIS
35
-------------------------- -
30 - N
---------- ------------
u. 25
V
20
15
o 10 -------------------------------------- ----------- ---- ------- ------ ----------- ------------
M
5
0
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
Stage (feet)
RATING CURVE AND FLOW DATA FOR
STATION SW-BDIS
1. Rating Curve Calculation (Stage vs Flow Rate)
Location Date Stage (ft) Flow (cfs) slope (m) intercept (b)
SW-BDIS Base 0 0.00 2.46 0
SW-BDIS 10/20/1998 0.95 2.34 52.67 -47.69
SW-BDIS 8/2/1999 1.22 16.56 26.57 -15.86
SW-BDIS 5/19/1999 1.85 33.30 18.00 0.00
II. Stage Readings and Computed Flow Rates
Date Location Stage (ft) Flow (cfs)
10/20/1998 SW-BDIS 0.95 2.34
11/24/1998 SW-BDIS 0.9 2.22
12/16/1998 SW-BDIS 0.94 2.32
1/18/1999 SW-BDIS 0.95 2.34
2/16/1999 SW-BDIS 0.85 2.09
3/16/1999 SW-BDIS 1 4.97
4/20/1999 SW-BDIS 1.2 15.51
5/18/1999 SW-BDIS 2 36.00
7/19/1999 SW-BDIS 1.07 8.66
8/2/1999 SW-BDIS 1.22 16.56
9/14/1999 SW-BDIS 1.1 10.24
Calculated Stream Flow for Station SW-BDIS
•
-------------------
Jul-98 Oct-98 Jan-99 Apr-99 Jul-99 Oct-99 Jan-00
40
35
30
U)
v 25
20
o:
0 15
U.
10
5
0
Station BDIS