Water report · Flathead Lake
Flathead Lake water level
Well above normal for mid August, and holding this week. Above 90% of past August 13s on record.
Updated 5:30 PM UTC, Aug 13
Flathead Lake water level history
What this means
2,893.02 ft puts Flathead Lake in the 90th percentile for August 13, against 27 years of record.
The median for this date is 2,892.73 ft, and half of all August 13s on record fell between 2,892.61 and 2,892.83.
Over the last 7 days, Flathead Lake held between 2,892.97 and 2,893.03 ft, lowest on Aug 6 and highest on Aug 12.
That is 0.06 ft higher than on Aug 6.
Over the last 30 days, Flathead Lake held between 2,892.95 and 2,893.07 ft, lowest on Aug 2 and highest on Jul 23.
That is 0.03 ft lower than on Jul 14.
Over the last 90 days, Flathead Lake held between 2,892.20 and 2,893.15 ft, lowest on May 25 and highest on Jul 2.
That is 0.80 ft higher than on May 15.
Over the last 12 months, Flathead Lake held between 2,886.35 and 2,893.15 ft, lowest on Mar 20 and highest on Jul 2.
That is 0.36 ft higher than on Aug 12.
On this water
No member has posted conditions here lately. The gauge says what the water is doing; an angler who was standing in it says what that felt like.
Post a reportUSGS monitoring location 12371550, Flathead Lake at Polson MT, 13.2 miles from the centre of Flathead Lake. Provisional data, subject to revision. Values refresh every 30 minutes. Readings describe the reservoir at the gauge; a shallow arm miles upstream will not match them.
About this gauge
Readings come from USGS monitoring location 12371550, Flathead Lake at Polson MT, 13.2 miles from the centre of Flathead Lake. It reports reservoir elevation. Values refresh every 30 minutes and are provisional until the agency reviews them. Readings describe the reservoir at the gauge; a shallow arm miles upstream will not match them.
Flathead Lake fishing records
The gauge is half the picture. The other half is what came out of the water: verified catches, the current record, and the anglers holding it.
See the Flathead Lake record book