Skip to main content

Halligan Water Supply Project

 Contact Information

 Halligan and NISP

 Receive Periodic Email Updates

Glossary of Terms

  • Acre-foot (AF): The volume of water required to cover 1 acre of land to a depth of 1 foot (around 326,000 gallons). Currently, an average single-family home served by Utilities uses almost a third of an acre-foot of water a year.
  • Cubic foot per second (cfs): A water flow measurement. Water flowing at one cfs will deliver about 450 gallons per minute or 646,000 gallons per day.
  • Environmental Impact Study (EIS): The EIS provides detailed analyses of the environmental impacts of the project, along with impacts of other alternatives to enlarging Halligan.
  • Firm Yield: The estimated maximum amount of water that can be supplied by a reservoir under specified conditions.
  • National Environmental Policy Act (NEPA): NEPA requires identification and evaluation of alternatives to meet the purpose and need of the project.
  • Potable Water: Water that is safe for human consumption.
  • Raw Water: Water that is not treated for consumption and is typically used for irrigation or other nonpotable uses.
  • U.S. Army Corps of Engineers (Corps): Performs Environmental Impact Study before issuing permit.