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Regional Groundwater Studies
- Ground-Water Availability in the United States
Water Availability Pilot
- Consumptive water use coefficients for Great Lakes Basin
Groundwater & the Environment
- Ground-Water Recharge in Southwestern US
Methods & Modeling
- SEAWAT v4--Simulation of 3D variable-density ground--water flow and transport
Data & Information
- Water-Level changes in aquifers of the Atlantic Coastal Plain, predevelopment to 2000

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Comparison of Selected Methods for Estimating Groundwater Recharge In Humid Regions

Sorted by Spatial Scale

Select Methods to Compare	METHOD	CATEGORY	SPATIAL SCALE	TEMPORAL SCALE	TYPICAL QUANTITY ESTIMATED	EASE OF USE	DATA NEEDS	RELATIVE COST
	Water-Table Fluctuations	Groundwater Methods	Local	Day to Years	Recharge	Easy	Low	Low
	Chlorofluorocarbons	Tracer Methods	Local	Month to Years	Recharge	Difficult	Moderate	High
	Streamflow Gain/Loss Measurements	Streamflow Methods	Local	Instantaneous	Potential Recharge	Easy	Low	Low
	Groundwater Modeling	Groundwater Methods	Local / Regional	Month to Years	Recharge	Moderate	High	High
	Seepage Meters	Streamflow Methods	Point	Event to Months	Potential Recharge	Moderate	Low	Low
	HELP3 Model	Water Budget	Point to Regional	Day to Years	Potential Recharge	Easy	Low to Moderate	Moderate
	Darcian Methods	Unsaturated Zone Methods	Point	Long-Term Average	Potential Recharge	Moderate	Low	High
	Zero-Flux Plane	Unsaturated Zone Methods	Point	Day to Years	Potential Recharge	Difficult	High	High
	Chloride	Tracer Methods	Point	Years	Recharge	Easy	Moderate	Moderate
	Tritium	Tracer Methods	Point	Month to Years	Recharge	Moderate	Moderate	High
	Temperature	Tracer Methods	Point	Days to Years	Recharge	Moderate	Moderate	High
	Zero-Tension Lysimeters	Unsaturated Zone Methods	Point	Day to Years	Potential Recharge	Difficult	Low	High
	Deep Percolation Model	Water Budget	Regional	Day to Years	Potential Recharge	Moderate	Moderate	Moderate
	Recession-Curve Displacement	Streamflow Methods	Watershed	Event to Years	Net Recharge	Moderate	Low	Low
	Stream Base-Flow Analysis	Streamflow Methods	Watershed	Years	Net Recharge	Easy	Low	Low
	Watershed Models	Streamflow Methods	Watershed /Regional	Days to Years	Recharge	Moderate	High	High

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URL: http://water.usgs.gov/ogw/gwrp/methods/compare/spatial.html
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Page Last Modified: Thursday, 03-Jan-2013 20:06:45 EST