2012-06-05_HYDROLOGY - M1977344

• Permit No: M1977344
• IBM Index Class Name: HYDROLOGY
• Doc Date: 6/5/2012
• Doc Name: SUBSTITUTE WATER SUPPLY PLAN
• From: DWR
• To: ARCADIS US
• Email Name: TC1
• Media Type: D
• Archive: No

Gross Annual Evaporation
East Pit Pond Surface Area =
North Pit Pond Surface Area =
Glory Hole Sump Surface Area =
Total Pond Free Water Surface Area =
Table 1
Holcim (US) Inc.
Portland Limestone Quarry
2012 Substitute Water Supply Plan
Total Pond Evaporation
50.95 inches
0.19 Acres
2.10 Acres
0.08 Acres
2.37 Acres
Purecipitatio
Evaporation (Ac
Feb -12
Ma r-12
Apr -12
May -12
Jun -12
Jul -12
Aug -12
Sep -12
Oct -12
Nov -12
Dec -12
3.5%
5.5%
9.0%
12.0%
14.5%
15.0%
13.5%
10.0%
7.0%
4.0%
3.0%
1.78
2.80
4.59
6.11
7.39
7.64
6.88
5.10
3.57
2.04
1.53
0.10
0.60
2.27
1.09
0.97
2.61
2.38
0.89
1.17
0.66
0.35
0.07
0.42
1.59
0.76
0.68
1.83
1.67
0.62
0.82
0.46
0.25
0.14
0.20
0.25
0.45
0.56
0.48
0.43
0.37
0.23
0.13
0.11
0.34
0.47
0.59
1.06
1.32
1.15
1.03
0.88
0.54
0.31
0.24
Notes:
1) Annual Evaporation from Table 3 - Adjusted Mean Monthly in the NOAA Technical Report NWS 33.
2) State of Colorado Division of Water Resources, General Guidelines for Substiture Water Supply Plans for Sand and Gravel Pits (April 1, 2011);
Paragraph 11 for elevations below 6500 feet msl.
3) Precipitation data from years 2004 to 2007 for Canon City, CO. Data from NOAA.
4) Effective precipitation is the amount of precipitation that is actually added and stored in the soil. Effective precipitation, also called the
Historical Consumptive use credit, may be added to the evaporation amount as a credit. The State of Colorado calculates the effective
precipitation as 70% of the actual precipitation as stated in paragraph 19 of the General Guidelines for Substitue Water Supply Plans for Sand
and Gravel Pits.