Lake Montesian

Outline

Drawn from the DNR's 24K hydrography (surveyed 1981), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.

Water clarity

7.2 ft Secchi depthModerateOlder reading

Last measured Sep 2, 2001. 2 readings on record, 1999 to 2001.

Only a few readings are on record.

Nothing has been measured in the last 5 years, so this may not match the lake today.

Secchi depth is how far down a white disk stays visible. A bigger number means clearer water. Clear means a Secchi depth of 10 feet or more, moderate 5 to 10 feet, low under 5 feet.

Wisconsin DNR water monitoring (volunteer and staff), via the Water Quality Portal; station LAKE MONTESIAN - LAKE MONTESIAN. Checked Oct 23, 2026.

Today at the lake

Forecast: National Weather Service (no endorsement implied). Sunrise, sunset and moon phase are calculated. The moon phase can be a day off.

Stocking history

• Largemouth Basslast stocked 2014 (large fingerling); stocked in 3 years since 2010
• Northern Pikelast stocked 2012 (large fingerling); stocked in 1 year since 2010

Stocking shows what was added to the lake, not what is in it now.

Wisconsin DNR annual fish stocking summary. Checked Oct 23, 2026.

Fish recorded near this lake

• Black Bullhead Ameiurus melas2005; 1 record
• Bluegill Lepomis macrochirus1967 to 2005; 3 records
• Green Sunfish Lepomis cyanellus2005; 2 records
• Largemouth Bass Micropterus salmoides1967 to 2005; 3 records
• Northern Pike Esox lucius1967; 1 record
• Smallmouth Bass Micropterus dolomieu2005; 1 record
• Walleye Sander vitreus2005; 1 record
• Yellow Perch Perca flavescens2005; 2 records

Recorded in open fish survey and museum records (GBIF). A record shows a fish was found near this lake in that year, not that it is there now, and says nothing about how many. Most coordinates are rounded to about 1 km, so a record is attached only when one lake is the clear match.

Open fish survey and museum records from GBIF; datasets are listed on the sources page. Checked Oct 23, 2026.

More lakes in Green County

• Decatur Lake11 miles away
• Beckman Lake14 miles away

All Green County lakes

Where this comes from

• Size, depth and lake typeWisconsin DNR lake classifications, checked Oct 23, 2026
• OutlineWisconsin DNR 24K hydrography, checked Oct 23, 2026
• Stocking historyWisconsin DNR annual fish stocking summary, checked Oct 23, 2026
• Water clarityWisconsin DNR water monitoring, via the Water Quality Portal, checked Oct 23, 2026
• Fish recordedOpen fish survey and museum records, via GBIF, checked Oct 23, 2026
• VHS statusWisconsin DNR VHS status by watershed, checked Oct 24, 2026

See data sources for what each source covers, and about for how the numbers are matched to lakes.