U.S. Geological Survey - science for a changing world

New Hampshire and Vermont Water Use Estimates for 2005 and Projections for 2020



Statewide Withdrawal and Return Flow Estimates

Studies were conducted by the U.S. Geological Survey New Hampshire-Vermont Office with the New Hampshire Department of Environmental Services and the Vermont Geological Survey to estimate the 2005 and project the 2020 water use for each state. The first objective of these studies was to understand current water withdrawal and return flow quantities in order for the respective state agencies to compare those values with groundwater and surface-water availability. The second objective was to project future withdrawals and return flows in order for the state agencies to evaluate areas where water shortages may occur or where future demand may require new withdrawal sources. A map of the basic hydrography of the study area is shown here.
Study Area Hydrography
click for full-size map

The studies incorporated procedures developed for estimating water use by the USGS as part of a detailed water-use analysis for the Seacoast region of New Hampshire (Horn and others, 2008). The studies were based on Census 2000 data and other data from the respective states. The estimates were done by census block, the smallest geographic unit of the census, so that the information could be aggregated up by watersheds or other geographic/political units. Project summaries, published reports, and 2005 and 2020 water use data aggregated by town, county and watershed are provided on this web site.

The value of water-use data
Water-use information can be used by town and county officials, planners, water supply managers, and citizens to help them understand:

  • How water was used in a given year
  • Distribution of population on household wells
  • Distribution of population using on-site disposal systems
  • Water withdrawal estimates by watershed

Photo of outdoor fountain, example of water use








Laura Hayes (NH)

Marilee Horn (NH)

Laura Medalie (VT)


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URL: http://nh.water.usgs.gov/projects/nhvtwateruse/index.htm
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Page Last Modified: Wednesday, 25-Jan-2017 13:27:48 EST