The state of Washington keeps a log of every well ever drilled. We read all 164,470 of them.

Washington well logs, made useful.

Every well log filed with Ecology — depth, static water level, tested yield, and the driller's original report — brought together around one address, instead of one record at a time.

✓ Verified against Ecology · 2026-08-17

157 ftmedian well depth statewide

63 ftmedian static water level

20 gpmmedian well yield

38,279wells drilled since 2016

What you can answer here

How deep will my well need to be? Median and range of actual drilled depths near you — not national averages.
What will it cost? Local median depth × published per-foot rates, with the math shown.
Will it produce enough water? Yields from pump tests on nearby wells.
Who drills around here? The drillers who actually filed recent well logs in your county.

These are Ecology records

Every figure here comes from Washington State Department of Ecology well construction reports — the state's official well-log repository. We index those same records by location so you can start from an address, and every well links back to its original filed log.

What's in a Washington well log → · About Ecology →

Buying property with a well — or land you'd need to drill?

See every recorded well near any Washington address: depths, water levels, yields, and links to the original driller's logs — all in one report.

Get the property report — $29

Driller, agent, or inspector? Unlimited & white-label plans →

Well data by county

Adams County 806 wells · median 300 ft Asotin County 537 wells · median 210 ft Benton County 4,434 wells · median 162 ft Chelan County 4,389 wells · median 155 ft Clallam County 4,280 wells · median 120 ft Clark County 7,021 wells · median 183 ft Columbia County 325 wells · median 261 ft Cowlitz County 5,835 wells · median 201 ft Douglas County 1,319 wells · median 180 ft Ferry County 1,681 wells · median 200 ft Franklin County 1,714 wells · median 204 ft Garfield County 146 wells · median 240 ft Grant County 5,487 wells · median 180 ft Grays Harbor County 2,226 wells · median 91 ft Island County 3,490 wells · median 178 ft Jefferson County 1,906 wells · median 160 ft King County 4,739 wells · median 142 ft Kitsap County 5,309 wells · median 146 ft Kittitas County 5,027 wells · median 210 ft Klickitat County 3,738 wells · median 282 ft Lewis County 8,359 wells · median 100 ft Lincoln County 1,907 wells · median 230 ft Mason County 5,584 wells · median 129 ft Okanogan County 7,158 wells · median 167 ft Pacific County 1,385 wells · median 24 ft Pend Oreille County 2,968 wells · median 160 ft Pierce County 8,262 wells · median 128 ft San Juan County 3,091 wells · median 300 ft Skagit County 3,789 wells · median 80 ft Skamania County 1,306 wells · median 210 ft Snohomish County 8,923 wells · median 105 ft Spokane County 14,399 wells · median 222 ft Stevens County 7,317 wells · median 220 ft Thurston County 9,051 wells · median 100 ft Wahkiakum County 367 wells · median 120 ft Walla Walla County 1,942 wells · median 162 ft Whatcom County 4,995 wells · median 72 ft Whitman County 810 wells · median 220 ft Yakima County 8,440 wells · median 185 ft