GRAS-25: Calculate Forage Area Adjustment Factors and Adjusted Annual Forage Production (gras_faaadjforprod)

Forage adjustment provides the ability to increase or decrease forage production and availability due to landscape conditions that limit the capture of forage, such as distance to water, slope, physical barriers, terrain or other site conditions.

From one or more water source point features in an area of analysis (AoA) create forage area adjustment FAA polygons and associated adjustment factors based on distance to water.

Intersect all AoA and FAA polygon geometry for all adjustment categories and then resolve FAA overlap using union geoprocessing. Calculate FAA areas and adjustment factors and return to requesting application.

Overlay forage inventory site (FIS) and forage adjustment area (FAA) geometries to create FAA polygons for each FIS in the area of analysis (AoA). Calculate weighted average annual adjusted production for FIS components, FISs, and AoAs. Application users enter measured production for FIS components.