Water budgets. The purpose of providing a monthly water budget is to bill based on the water needs of your landscaping and current weather conditions. For example a small office building would be expected to have lower demand than a horse farm. Each account has a different water budget based on the type of plants and size of irrigated area which will vary monthly based on changes in weather.
A recent series of articles and blog posts by jeff mount and others from the public policy institute of california ppic proposes a system of water budgets for the environment as part of a new system for managing water and rivers in california. The primary building blocks of the water budget are base layers of precipitation streamflow evapotranspiration et water use and change in groundwater storage. Water budgets may vary monthly based on seasonal outdoor watering needs.
For commercial industrial and institutional customers. The water budget establishes a baseline of how much the homeowner should expect to use in the house and where the water goes. Eto is the standard measure of water needs from which other plant types are compared via k s.
The balance of water inflows and outflows or water budget for a groundwater system is described by a simple equation. Recharge water entering discharge water leaving the water leaving often is discharged to streams and rivers and is called base flow. Water budgets for these non residential customers will be based on industry standard methodology which considers factors such as the type of business historical average use and amount of irrigated landscaping.
Additional conservation strategies can be designed from the water budget information. The water balance graph shows precipitation and potential evapotranspiration both as line graphs. A water budget reflects the relationship between input and output of water through a region.
The possible inflows recharge and outflows discharge of a ground water system under natural equilibrium conditions are listed in table 1. Erain effective rainfall inches equals the depth of rain effective in offsetting eto for each hydrozone. Thus we have a direct comparison of supply of water and the natural demand for water.
The water balance equation is no different than a bank statement. Where i represents the total of the inflows to the system o the total outflows and ds is the change in storage. The difference between deposits.