Kootenai County, ID Water Table Trend
Kootenai County, ID: what the water table is actually doing
Kootenai County's long-term well puts the trend at 1.5 ft per decade, rising, getting shallower over time, based on 563 measurements since 1971.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Kootenai County's source well, in detail
Depth to water at the last reading was 409.1 ft below land surface. Readings span 1971-07-16 to 2026-09-14, 563 measurements from USGS well USGS-475439116503401 (53n 04w 28cab1), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Kootenai County compares nationally
Kootenai County sits at rank 166th of 1,449 ranked counties, ordered rising-to-declining, so a low number means a rising water table and a high one means fast decline. Kootenai County, Idaho is home to about 188,323 people. See the fastest-moving counties guide for how Kootenai County stacks up against the most extreme cases nationally.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Kootenai County can be stable in depth and still worth testing for quality, or declining and still test clean, the two are measured separately, and only a direct test settles the second one.