2025-08-07_HYDROLOGY - M1977098

• Permit No: M1977098
• IBM Index Class Name: Hydrology
• Doc Date: 8/7/2025
• Doc Name: Substitute Water Supply Plan
• From: Division of Water Resources
• To: DRMS
• Email Name: TJ1
• Email Name: THM
• Media Type: D
• Archive: No

APPENDIX B
Unit Response Function and Lagged Depletions Analysis
United Companies - Sievers Pit
(all values are in acre-feet)
URF Inverted URF Month Depletions Lagged Depletions
AF AF
1 0.38 12 0.00 1 0.01
2 0.39 11 0.00 2 0.04
3 0.14 10 0.00 3 0.10
4 0.05 9 0.00 4 2.49
5 0.02 8 0.00 5 2.60
6 0.01 7 0.00 6 2.71
7 0.00 6 0.01 7 2.72
8 0.00 5 0.02 8 2.65
9 0.00 4 0.05 9 2.53
10 0.00 3 0.14 10 2.43
11 0.00 2 0.39 11 2.35
12 0.00 1 0.38 12 0.02
1 0.01 0.56
Notes: 2 0.04 0.23
(1) URF developed using AWAS software and 3 0.10 0.13
parameters outlined in the February 9, 2022 4 2.49 1.02
approval letter for Sievers Pit Subsitute Water 5 2.60 1.99
Supply Plan: 6 2.71 2.41
Transmissivity= 120,000 gpd/ft 7 2.72 2.60
Specific Yield=0.2 8 2.65 2.65
X= 1,300 ft(Distance to Stream) 9 2.53 2.60
W=2,500 ft(Distance to Impermeable Boundary 10 2.43 2.52
from stream) 11 2.35 2.43
12 0.02 1.49
1 0.01 0.56
2 0.04 0.23
3 0.10 0.13
4 2.49 1.02
5 2.60 1.99
6 2.71 2.41
7 2.72 2.60
8 2.65 2.65
9 2.53 2.60
10 2.43 2.52
11 2.35 2.43
12 1 0.021 1.49
Wright Water Engineers,Inc. DES:ABI
P:\061-052\096 Sievers\SWSP 2025\Tables\2025 SWSP Tables.xlsx 4/24/2025 CHK:JBH