Benefits Toolkit

Rainwater Harvesting Calculator

State of Washington Department of Ecology
2010

This Excel-based calculator was developed to help residents of Washington State size and test scenarios for rain water harvesting systems based on the typical climate. The calculator assumes that water is harvested entirely from roofs and that 80% of precipitation falling on roofs is captured. Inputs are the...

Topics

Stormwater management, Water conservation, Rainwater harvesting

SPAW Field & Pond Hydrology Model

USDA Agricultural Research Service and Washington State University Department of Biological Systems Engineering
2009

The SPAW (Soil-Plant-Air-Water) model simulates the daily hydrologic water budgets of agricultural landscapes with two connected modules, one for farm fields and one for impoundments such as wetland ponds, lagoons or reservoirs. The model was developed to understand and predict agricultural hydrology and its...

Topics

Stormwater management, Water body/groundwater recharge, Wetland

This straightforward calculator uses the inputs of produce type and planted area to determine the total pounds grown and market value of individual or multiple crops. Over 50 kinds of vegetables, fruits, and herbs are available in the drop-down menu. Calculations are based on default values for yield and price per...

Topics

Food production, Other economic, Food garden

Water Harvesting Calculator

Water Harvesting Solutions (Wahaso)
2009

This tool estimates the volume of water required for toilet flushing in a building and compares it to the amount of water that a rainwater harvesting system could capture from roofs and parking lots. Inputs include: information on building occupancy, average rainfall, and roof and parking lot catchment areas....

Topics

Water conservation, Rainwater harvesting

eBird

Cornell Lab of Ornithology
2009

eBird is a database of citizen science bird observations that allows for tracking of bird species distribution and abundance worldwide. The online database is freely accessible and made possible by millions of bird observers across the world uploading information from field observations. The only required input is...

Topics

Populations & species richness

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