Your outdoor water budget is the daily amount of water required by bluegrass in Greeley (Irrigation Water Requirement) multiplied by the square footage of your potentially landscaped area (Irrigable Area).
Your outdoor water budget is the daily amount of water required by bluegrass in Greeley Irrigation Water Requirement (IWR) multiplied by the square footage of your potentially landscaped area (IA).
Factoring in rainfall and the amount of water an average sprinkler system can deliver, deliver the Irrigation Water Requirement changes as the weather changes, and is calculated using three variables.
Plant Water Requirement represents how much water the plant needs, in inches: ETgrass x Kc(grass).
ETgrass is the daily evapotranspiration (add definition) rate, in inches, for bluegrass turf, which changes depending on weather conditions.
Kc(grass) is the growing coefficient for bluegrass. It reflects how much water the plant needs, and maintains the same annual cycle each year.
Precipitation is the daily amount, measured in inches, of widespread precipitation in Greeley.
Distribution Uniformity (DU) is the fractional number that represents how efficient your sprinkler system is at uniform irrigation. The DU used for Greeley’s Irrigation Water Requirement calculation is 0.7 — which represents a relatively efficient sprinkler system. To help improve your efficiency, please look into our rebate and audit programs.
The calculation for the daily Irrigation Water Requirement is:
Irrigation Water Requirement = (Plant Water Requirement – Precipitation)/DU
If Precipitation is greater than the Plant Water Requirement, then the Irrigation Water Requirement is zero — because the rainfall was enough to satisfy the needs of bluegrass turf. On average, if it rains more than a quarter of an inch in Greeley, bluegrass turf doesn’t require irrigation.