Humboldt County, NV Water Table Trend
Humboldt County's groundwater trend, from USGS's own readings
Humboldt County's representative monitoring well shows depth to water declining, slower than most declining counties, a fitted trend of 0.9 ft per decade over 72 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Humboldt County's source well, in detail
Depth to water at the last reading was 78.2 ft below land surface. Readings span 1954-01-01 to 2025-09-15, 14 measurements from USGS well USGS-413400119070001 (027 N42 E25 10b 1 Usblm Summit Lake), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Humboldt County compares nationally
Humboldt County sits at rank 1061st 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. Humboldt County, Nevada is home to about 17,116 people. See the fastest-moving counties guide for how Humboldt County stacks up against the most extreme cases nationally.
If you own a well in Humboldt County
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Humboldt County, that trend is real, not assumed: 0.9 ft per decade over 72 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Humboldt 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.