Montague County Lake Quality
Texas, 1 lakes, average grade D (Poor)
Only 1 lakes in Montague County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. The county-wide average grade is D — water quality issues are persistent across most of the monitored basins. 0 lakes fall into the F bracket outright.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Lake Amon G Carter (D) is the cleanest in the county.
Quick Answers for Montague County
Planning a trip? Check special fishing regulations for Lake Amon G Carter — or check the official Texas fishing regulations.
All Lakes in Montague County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lake Amon G Carter | D | 2.3 ft | 40 µg/L |
Other Counties in Texas
See how Montague County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 17 states.
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Source: EPA National Aquatic Resource Surveys, 2026.