2022-03-28_HYDROLOGY - M2018037

• Permit No: M2018037
• IBM Index Class Name: Hydrology
• Doc Date: 3/28/2022
• Doc Name: Substitute Water Supply Plan
• From: Division of Water Resources
• To: Civil Resources, LLC
• Email Name: ECS
• Email Name: MAC
• Media Type: D
• Archive: No

Table 1
Inouye Gravel Mine
Evaporative Losses
(1) (2) (3) (4) (5) (6) (7) (8) (9)
Month Percent of Gross Average Effective Net West Site East Site Lagged Site
Annual Evaporation Precipitation Precipitation Evaporation Evaporation Evaporation Evaporation
Evaporation
(inches) (inches) (inches) (inches) (feet) (ac-ft) (ac-ft) (ac-ft)
Jul-20 15.0% 6.60 1.37 0.96 5.64 0.47 0.00 0.00
Aug-20 13.5% 5.94 1.35 0.95 4.99 0.42 0.00 0.00
Sep-20 10.0% 4.40 0.99 0.69 3.71 0.31 0.00 0.00
Oct-20 7.0% 3.08 0.79 0.55 2.53 0.21 0.00 0.00
Nov-20 4.0% 1.76 0.59 0.41 1.35 0.11 0.00 0.00
Dec-20 0.0% 0.00 0.34 0.24 0.00 0.00 0.00 0.00
Jan-21 0.0% 0.00 0.37 0.26 0.00 0.00 0.00 0.00
Feb-21 3.5% 1.54 0.34 0.24 1.30 0.11 0.00 0.00
Mar-21 5.5% 2.42 0.89 0.63 1.79 0.15 0.00 0.00
Apr-21 9.0% 3.96 1.40 0.98 2.98 0.25 0.06 0.00
May-21 12.0% 5.28 2.05 1.44 3.84 0.32 0.08 -0.02
Jun-211 14.5% 6.38 1.47 1.03 5.35 0.45 0.11 -0.03
Jul-21 15.0% 6.60 1.37 0.96 5.64 0.47 0.70 -0.08
Aug-21 13.5% 5.94 1.35 0.95 4.99 0.42 0.62 -0.21
Sep-21 10.0% 4.40 0.99 0.69 3.71 0.31 0.62 -0.31
Oct-21 7.0% 3.08 0.79 0.55 2.53 0.21 0.42 -0.38
Nov-21 4.0% 1.76 0.59 0.41 1.35 0.11 0.22 -0.38
Dec-21 0.0% 0.00 0.34 0.24 0.00 0.00 0.00 -0.34
Jan-22 0.0% 0.00 0.37 0.26 0.00 0.00 0.00 -0.27
Feb-22 3.5% 1.54 0.34 0.24 1.30 0.11 0.22 -0.21
Mar-22 5.5% 2.42 0.89 0.63 1.79 0.15 2.30 0.07 -0.34
Apr-22 9.0% 3.96 1.40 0.98 2.98 0.25 3.82 0.12 -0.87
May-22 12.0% 5.28 2.05 1.44 3.84 0.32 4.93 0.16 -1.65
Jun-22 14.5% 6.38 1.47 1.03 5.35 0.45 6.86 0.22 -2.57
Jul-22 15.0% 6.60 1.37 0.96 5.64 0.47 7.24 0.23 -3.64
Aug-22 13.5% 5.94 1.35 0.95 4.99 0.42 6.41 0.21 -4.51
Sep-22 10.0% 4.40 0.99 0.69 3.71 0.31 4.76 0.15 -4.94
Oct-22 7.0% 3.08 0.79 0.55 2.53 0.21 3.24 0.11 -4.89
Nov-22 4.0% 1.76 0.59 0.41 1.35 0.11 1.73 0.06 -4.46
Dec-22 0.0% 0.00 0.34 0.24 0.00 0.00 0.00 0.00 -3.75
Jan-23 0.0% 0.00 0.37 0.26 0.00 0.00 0.00 0.00 -2.89
Feb-23 3.5% 1.54 0.34 0.24 1.30 0.11 1.67 0.05 -2.29
Mar-23 5.5% 2.42 0.89 0.63 1.79 0.15 2.30 0.07 -2.13
Per Year 94% 44.00 12.0 8.4 33.5 2.8 43.0 1.4 -38.6
(1)Based on SB 120 for gravel pits at elevations below 6,500 feet,readjusted for ice-cover months.
(2)Percent of Annual Evaporation times 44.0 inches.Assume zero evaporation during months with ice coverage(January&
December).
(3)From Western Regional Climate Center,(http:/Nn ..wrcc.dd.edu/),see Appendix A.
(4)Equals Column(3)times 70%
(5)Equals Column(2)minus Column(4).
(6)Equals Column(5)divided by 12 inches.
(7)Equals the monthly values in Column(6)times the exposed groundwater for the east phase.
(8)Equals the monthly values in Column(6)times the exposed groundwater for the west phase.
(9)Based on SEO Glover calculations:X=3,582 and 875,W=5,001 ft,T=140,000 gpdtft&S=0.2.
Civil Reeou­LLC 1=022 J:`Hesrway-213Unouye\SW PU022upda a\TSSPTables.INOUVE-2022FD2..N