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APPENDIX
Proposed Crop with Highest Irrigation Demand:
Proposed Planted Acreage Requiring Irrigation:
Date of Planting: May 15th'
Corn
7.5 acres out of 7.983 acres of open space
Growing Season: 18 weeks (126 days) to reach maturity2
Cumulative Water required to Reach Maturity: 25.9 inches3
11 Year Average Precipitation during period May — September: 15.89 inches
Least Precipitation during Growing Season (during the last 11 years): 2020 @ 8.78 inches
Irrigation Water Required (Year with most precipitation: 2011) =
25.9" required — 26.7" precipitation = 0" deficit * Precipitation exceeded crop demand
Irrigation Water Required (Year with 11 year average precipitation) =
25.9" required — 15.89" precipitation = 10.01" deficit
10.01" x (1 ft /12 ") x 7.5 acres x (43,560 sf /acre) = 272,522 CF
272,522 CF x (7.48 gals /CF) = 2,038,466 alb
Irrigation Water Required (Year with least precipitation: 2020) =
25.9" required — 8.78" precipitation = 17.12" deficit
17.12" x (1 ft /12 ") x 7.5 acres x (43,560 sf /acre) = 466,092 CF
466,092 CF x (7.48 gals /CF) = 3,486,368 alg lons
1 https:Hagfax.com/2015 /01/12/ new -york- corn- early- can - plant -now/
2 University of Nebraska Nebguide G1850 https:Hextensionpublications .unl.edu/assets /pdf/gl850.pdf
3 University of Nebraska Nebguide G1850 https:Hextensionpublications .unl.edu/assets /pdf/gl850.pdf
4 Cornell Cooperative Extension- Suffolk County. Data from observation site closest to subject property was used
(Laurel) except for 2018 where Jamesport was used because Laurel data was invalid
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Notes:
1. This analysis does not include irrigation water demand reduction that could be realized
by selection of a hybrid corn seed that has a shorter maturity period.
2. This analysis is based on the use of corn. Alternate crops will be rotated with corn. The
alternate crops are anticipated to have a lower irrigation water demand.
3. Cornell Cooperative precipitation data: 2010 11.1' ;201126.7 "; 2013 17.31' ; 2014 8.77 ";
2015 13.2 "; 2016 9.58 "; 2017 19.70 "; 2018 20.69 "; 2019 18.09 "; 2020 8.78"