Rosebud County, MT Water Table Trend
Rosebud County, MT: what the water table is actually doing
Rosebud County's long-term well puts the trend at 0.3 ft per decade, holding roughly steady, based on 184 measurements since 1986.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Rosebud County's source well, in detail
Depth to water at the last reading was 10.7 ft below land surface. Readings span 1986-10-08 to 2026-08-06, 184 measurements from USGS well USGS-451746106301101 (06s43e19ddba02 Birney), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Rosebud County compares nationally
Rosebud County sits at rank 856th 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. Rosebud County, Montana is home to about 8,194 people. See the fastest-moving counties guide for how Rosebud 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 Rosebud 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.