Putnam County, TN Water Table Trend
Putnam County, TN: what the water table is actually doing
Over 37 years of USGS readings, the well tracking Putnam County's aquifer is holding roughly steady: 0 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Putnam County's source well, in detail
Depth to water at the last reading was 52.5 ft below land surface. Readings span 1989-10-05 to 2026-10-20, 138 measurements from USGS well USGS-360521085432600 (Pm:C-001), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Putnam County compares nationally
Putnam County sits at rank 681st 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. Putnam County, Tennessee is home to about 84,894 people. See the fastest-moving counties guide for how Putnam 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 Putnam 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.