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AnnAGNPS Pollutant Loading Model

K. Irrigation


The irrigation module determines each day if an irrigation event takes place. If so, the depth of water applied is calculated as well as a first estimate of runoff (later revised in Soil Moisture) and the net amount of water entering the soil. Several types of furrow, sprinkler, and other irrigation methods are considered as well as three types of scheduling: automatic, which is triggered by soil moisture falling below a threshold; manual interval, where a specified amount of water is applied on a regular schedule; and manual irrigation on irregularly spaced dates. The occurrence of chemical irrigation is also tracked.


Tom Spofford or Dave Garen