2014-08-12_HYDROLOGY - M1978056

• Permit No: M1978056
• IBM Index Class Name: Hydrology
• Doc Date: 8/12/2014
• Doc Name: SWSP Amendment
• From: DWR
• To: Cheryl Signs Engineering
• Permit Index Doc Type: Hydrology Report
• Email Name: PSH
• Media Type: D
• Archive: No

Cheryl Signs, P.E. Page 8
Durham Combined SWSP
August 12, 2014
Von Ohlen Farm HCU Results
Month Jan Feb Mar Apr May Jun Jul AugSep Oct Nov Dec Total
Farm Headgate
Delivery 0.0 0.0 0.0 4.3 30.9 55.2 76.6 70.2 48.4 6.1 0.0 0.0 291.6
On Farm Depletion
of Surface Water 0.0 0.0 0.0 3.7 10.2 25.4 43.3 35.5 17.8 5.0 0.0 0.0 140.9
Surface Return
Flow 0.0 0.0 0.0 0.4 3.1 5.5 7.7 7.0 4.8 0.6 0.0 0.0 29.2
Groundwater
Return Flows 0.0 1 0.0 0.0 1 1.6 16.0 22.5 27.7 27.7 24.7 2.2 0.0 0.0 122.3
Lagged Ground
Water Return Flows 3.0 2.2 1.7 2.0 9.1 15.7 20.8 23.2 22.9 12.1 5.9 4.0 122.4
Average Net
Depletion -3.0 -2.2 -1.7 1.9 18.7 34.0 48.1 40.0 20.7 -6.0 -5.9 -4.0 140.6
Return Flow Factor 1 1.0% 0.8% 1 0.6% 47% 1 29% 1 28% 27% 33% 47% 1 4.1% 1 2.0% 1.4% NA
Heintzelman Farm
The one share on the Heinzelman Farm was used to irrigate approximately 108.7 acres located in
located in Section 32, Township 3 North, Range 67 West of the 6" P.M. The Applicant's HCU was
based on 108.7 acres of crop mix of corn, beets, alfalfa, grain, beans and pasture grass.
The HCU results are summarized in the table below.
Heinzelman Farm HCU Results
Month Jan Feb Mar Apr May Jun Jul AugSep Oct Nov Dec Total
Farm Headgate
Delivery 0.0 0.0 0.0 4.3 30.9 55.2 76.6 70.2 48.4 6.1 0.0 0.0 291.6
On Farm Depletion
of Surface Water 0.0 0.0 0.0 4.5 12.2 30.2 50.3 40.8 20.6 5.9 0.0 0.0 164.5
Surface Return
Flow 0.0 0.0 0.0 0.4 3.1 5.5 7.7 7.0 4.8 0.6 0.0 0.0 29.2
Ground Water
Return Flows 0.0 1 0.0 0.0 1 1.3 13.9 18.6 21.2 21.8 20.4 2.0 0.0 0.0 99.1
Lagged Ground
Water Return Flows 0.0 0.0 0.0 1.0 10.6 17.2 20.5 21.6 20.8 6.8 0.8 0.0 99.2
Average Net
Depletion 0.0 0.0 0.0 2.9 17.2 32.5 48.4 41.6 22.8 -0.7 -0.8 0.0 164.0
Return Flow Factor 0.0% 0.0% 0.0% 23% 1 34% 31% 27% 31% 43% 2.3% 0.3% 1 0.0% NA
The HCU results for the three farms are summarized below.
Table 6-The three Farm Total HCU Results
Month Jan Feb Mar Apr May Jun Jul AugSep Oct Nov Dec Total
Farm
Headgate
Delivery 0 0 0 21.5 154.4 275.9 383 351.1 241.9 30.5 0 0 1458
On Farm
Depletion of
Surface
Water 0 1 0 1 0 1 19.1 1 52.4 1 130.4 1 221.2 181.6 90.7 25.6 0 0 721
Surface
Return Flow 0 0 0 2.1 15.5 27.5 1 38.4 1 35.1 t 24.1 3 0 0 145.9