Hydrohistorian
My water
Type an address and see what water touches that ground. Everything on this page comes from public DWR, Census and USGS records already on this site — nothing is sent anywhere else.
Your position is used for this one lookup and never stored on our server. On a phone, Add to Home Screen keeps this a tap away, and it still shows your last answer without a signal.
What you’ll get
The water district your address sits in, whether the land is mapped as irrigated and by which ditches, and the wells, reservoirs and stream gages working around you — each linking to its full record.
Prefer pointing? Open the map and click any spot for the same answer.