1. U.S. Department of the Interior U.S. Geological Survey A National Water Census You Can’t Manage What You Don’t Measure…

2. Water is critical to sustain and support: Life Ecosystems Economy Life Ecosystems Economy You Can’t Manage What You Don’t Measure…

3. How much water do we have in the U.S? Is the amount changing over time? How much water do we have in the U.S? Is the amount changing over time?

4. You Can’t Manage What You Don’t Measure… What is a water census?

5. You Can’t Manage What You Don’t Measure… Account for water with a “budget”

6. You Can’t Manage What You Don’t Measure… Precipitation Evapotranspiration Storage in Reservoirs, Lakes, Snow and Ice River Flow Groundwater –Recharge rates –Water level in aquifers Ecological Needs Water Withdrawals Return Flows Consumptive Uses Run-of-the-River Uses A Nationwide System to deliver water availability information

7. You Can’t Manage What You Don’t Measure… Envision a seamless coverage of information for each component

8. You Can’t Manage What You Don’t Measure… Surface StorageRecharge Evapotranspiration BaseflowRunoff USGS will provide this for all components Precipitation

9. You Can’t Manage What You Don’t Measure… Can our water sustain important habitats? A water census will allow managers to balance healthy habitats and human water use

10. You Can’t Manage What You Don’t Measure… Flow Needs for Wildlife and Habitat

11. You Can’t Manage What You Don’t Measure… Can freshwater supplies meet long-term needs? A water census will identify how much water is available for renewable energy development.

12. You Can’t Manage What You Don’t Measure… Enhancing the Nation’s Water Use Information

13. You Can’t Manage What You Don’t Measure… Why Now? Competition is increasing, climate is changing, water in storage is declining

14. You Can’t Manage What You Don’t Measure… What will a Census provide us? It will provide State, local and Regional water professionals the Information they need to plan for and allocate water resources.

15. You Can’t Manage What You Don’t Measure… Periodic Studies on Topics of National Interest

16. You Can’t Manage What You Don’t Measure… Are we making progress on the Water Census?