ConnecticutReservoir, 489 acres, Tolland County
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212.10ft
Down 0.26 ft this week
Sailing
CheckingReading the forecast
Kayak and SUP
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Power boating
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Fishing
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Outlook. Monday: WNW wind 3 to 7 kt, gusts to 12 kt, high near 66°F. Tuesday: N wind 3 to 6 kt, gusts to 12 kt, high near 56°F.
7-day wind forecastLoads when you scroll here
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Last hour of NOAA MRMS radar, 1 km resolution. Map data © OpenStreetMap contributors, OpenMapTiles, OpenFreeMap.
212.10ft above sea level
-0.26 ft in 7 days0.11 ft above the October normal
Reading from Oct 26, 2026. Shaded band: range of October averages on record; dashed line is the typical level.
Mansfield Hollow Lake was at 212.10 ft on October 26, falling 0.26 ft over the past week. That is near normal for October: the typical October level is 211.99 ft, so the lake is 0.11 ft above its usual mark.
Background reading: Mansfield Hollow Lake on Wikipedia
Mansfield Hollow Lake is a 489-acre reservoir in Tolland County, Connecticut. The reservoir dates to 1949.
Water level on this page comes from the U.S. Army Corps of Engineers reading at Mansfield Hollow Dam, published through the Corps' CWMS data service. Wind, gusts and rain come from the National Weather Service forecast grid that covers the water.
Small lakes rarely build big waves, but trees and hills around the shore make the wind patchy. Expect sudden puffs and lulls rather than a steady breeze. Reservoir levels move with releases and inflow, so ramps and beaches can change week to week. The water level page tracks that day by day.
The go or no-go calls above are a starting point, not a guarantee. Read how we score conditions, and always check local rules and posted warnings before you launch.
The National Weather Service forecast for the lake from October 26: Monday: WNW wind 3 to 7 kt, gusts to 12 kt, high near 66°F. The panel at the top of this page refreshes the current wind, gusts and direction when you open it and turns them into a call for sailing, paddling, power boating and fishing.
Mansfield Hollow Lake was at 212.10 ft on October 26, falling 0.26 ft over the past week. That is near normal for October: the typical October level is 211.99 ft, so the lake is 0.11 ft above its usual mark.
Mansfield Hollow Lake covers about 489 acres (0.8 square miles) of surface water.
The dam that forms Mansfield Hollow Lake was completed in 1949.
If Mansfield Hollow is blown out, these are the closest alternatives. Tap through for their conditions.