Franklin County, TN Water Table Trend
Franklin County, TN: what the water table is actually doing
Over 37 years of USGS readings, the well tracking Franklin County's aquifer is declining at a typical pace for a declining county: 1.5 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Franklin County's source well, in detail
Depth to water at the last reading was 19.4 ft below land surface. Readings span 1989-07-28 to 2026-08-07, 141 measurements from USGS well USGS-352045086085401 (Fr:R-050 Aedc-146), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Franklin County compares nationally
Franklin County sits at rank 1145th 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. Franklin County, Tennessee is home to about 45,137 people. See the fastest-moving counties guide for how Franklin County stacks up against the most extreme cases nationally.
If you own a well in Franklin County
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Franklin County, that trend is real, not assumed: 1.5 ft per decade over 37 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Franklin 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.