Teacup Diagram

Click on a reservoir on the map to see a teacup diagram showing current and historical storage information.

Storage levels represent total water impounded by each facility less any dead storage (reservoir capacity from which stored water cannot be evacuated by gravity).
 
Data are updated once a day. Due to timing of data reporting, dates of values displayed may differ slightly between facilities.
 
Percent of of typical storage is based on the last 30 years of historical data for the date the storage value is reported. This metric provides context by allowing for comparison of current conditions with historical storage for a given date. Note that changes in facility operations over the past 30 years may impact the comparability of some historical data to current conditions.