3. Deliver technical information and tools to stakeholders Our objective for the Water Census

4. Water Availability Analysis The process of determining the quantity and timing-characteristics of water, which is of sufficient quality, to meet both human and ecological needs.

5. Department of the Interior initiative on water availability and conservation Led by the Assistant Secretary for Water and Science The National Water Census What is?

6. Account for water with a “budget”

7. A Nationwide System to deliver water accounting information Surface Storage Recharge ET Baseflow Runoff Precipitation

8. A web application for delivering water availability information at scales that are relevant to the user Information delivery

9. Scale Matters

10. Five Areas of Nationwide Topical Work Estimation of Flow at Ungaged Locations Groundwater Information Estimation of Evapotranspiration Water Use Ecological Water Science

11. Focus Area Studies within Water Resource Regions Apalachicola-Chattahoochee-Flint Water Use GW/SW Model Ecological Flows

12. Focus Area Studies within Water Resource Regions Apalachicola-Chattahoochee-Flint Colorado Water Use ET and Snowpack Dynamics GW Contrib to Baseflow

13. Focus Area Studies within Water Resource Regions Colorado Apalachicola-Chattahoochee-Flint Delaware Water Use Watershed Model Ecological Flows

14. Eric J Evenson Water Census Coordinator U.S. Geological Survey 810 Bear Tavern Road, Suite 206 Trenton, New Jersey 08628 609-771-3904 eevenson@usgs.gov U.S. Department of the Interior U.S. Geological Survey