Arizona ยท county water record
Water in Yuma County
What the state and federal record says about water here, before you look at any particular piece of ground. Every finding names the agency it came from.
- 10,970 Wells on record across 5,630 square miles
- 200 ft Well depth middle value across 711 of 5,630 square miles
- 99 ft Depth to water middle value across 20 of 5,630 square miles
Point at any square mile to read what is on it. Hover the maps below to compare them.
Yuma County by the square mile
Every finding on this page is one number for the whole county. These are the same records placed on the ground they came from.
Wells on record. Every well ADWR has a record of, exempt and non-exempt together.
- none on record (bare ground)
- up to 1
- 2
- 3 to 4
- 5 to 10
- 11 to 40
- over 40
5,630 surveyed sections, drawn 2 by 2 miles to a square. The shading is scaled against every county in Arizona, so a colour means the same thing on any of these pages. The outline is the county boundary from the Census Bureau: ground inside the line and outside the shading is ground nobody has drilled, filed on or addressed. Aerial imagery is the USGS National Map.
Stands out
A lot of this county is within five miles of a federal cleanup site
33% of the county lies within five miles of a Superfund site, against 5% across the state. Five miles is proximity rather than contamination, and it is the distance at which a groundwater plume stops being somebody else's problem.
EPA Superfund national priorities list 1 of 13 counties
33% here 1st of 13 One bar per Arizona county from lowest to highest. Point at one to name it.
Worth knowing
A lot of well registrations here have been cancelled
27% of well records are cancelled. A cancelled registration is not a well you can use.
ADWR wells registry 3 of 15 counties
27% here 3rd of 15 One bar per Arizona county from lowest to highest. Point at one to name it.
Worth knowing
FEMA has never determined the flood risk for most of this county
76% of the county is FEMA Zone D, which means undetermined hazard. Nobody has looked. That is a different thing from being studied and coming back outside the floodplain, and a lender or an insurer will treat the two differently.
FEMA National Flood Hazard Layer 3 of 15 counties
76% here 3rd of 15 One bar per Arizona county from lowest to highest. Point at one to name it.
Worth knowing
The water table here is falling faster than it used to
Twenty years of monitoring show -2.3 feet of change and the last ten show -2.4. Half the record has produced more than half the drop, so the decline is steepening rather than levelling off. A well drilled to a depth that worked ten years ago has less margin than the twenty-year figure suggests.
ADWR groundwater level change 3 of 10 counties
-0.1 ft/yr here 3rd of 10 One bar per Arizona county from lowest to highest. Point at one to name it.
Worth knowing
Nearly every monitored well here is falling
75% of the 32 wells ADWR has monitored for twenty years are declining rather than recovering. This counts wells, not feet: a county can be losing only a foot a year and still have almost every well in it pointing the same way, which is what says the drawdown is regional rather than one heavy pumper.
ADWR groundwater level change 5 of 15 counties
75% here 5th of 15 One bar per Arizona county from lowest to highest. Point at one to name it.
Worth knowing
Water sampled here comes back over a federal limit more often than it should
6.2% of groundwater samples in this county exceeded a federal drinking water standard, across 5,185 samples. In Arizona the usual culprit is arsenic, which is natural, invisible, and a treatment cost rather than a reason not to buy.
Water Quality Portal (USGS and EPA) 5 of 15 counties
6.2% here 5th of 15 One bar per Arizona county from lowest to highest. Point at one to name it.
Worth knowing
Parcels here are large
The typical parcel is 158 acres. Size is the reason the water question is worth asking: a large parcel with no water is a large parcel you cannot do anything with.
County assessor parcel records 3 of 15 counties
158 ac here 3rd of 15 One bar per Arizona county from lowest to highest. Point at one to name it.
Context
The land here is sinking where the aquifer was drawn down
549 mapped subsidence features and no confirmed fissures yet. Subsidence is what precedes a fissure, and it is worth knowing about before it becomes one.
AZGS earth fissure and subsidence mapping 4 of 9 counties
549 here 4th of 9 One bar per Arizona county from lowest to highest. Point at one to name it.
This is the county. Your question is probably a property.
None of the above is about a particular parcel. Water is not parcel-shaped: the ditch serving the ground runs through other people's land and the senior right that curtails it sits somewhere else, which is why the state files by survey section rather than by property. Check an address and you get the square mile it sits in, with the wells, the rights and what was actually diverted.
Check a property in Yuma County