Callahan Lake

Outline

Drawn from the DNR's 24K hydrography (surveyed 1990), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.

Water clarity

10 ft Secchi depthClear

Last measured Aug 28, 2026. 25 readings on record, 2009 to 2026.

Typical summer clarity (June to September): 10.2 ft, clear, from 18 readings (2020 to 2026).

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 Callahan Lake - Deepest Spot. 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.

Fish recorded near this lake

• Black Crappie Pomoxis nigromaculatus1978; 1 record
• Bluegill Lepomis macrochirus1949 to 1978; 3 records
• Largemouth Bass Micropterus salmoides1949 to 1978; 3 records
• Muskellunge Esox masquinongy1949 to 1978; 3 records
• Northern Pike Esox lucius1959; 1 record
• Pumpkinseed Lepomis gibbosus1949 to 1978; 3 records
• Rock Bass Ambloplites rupestris1959 to 1978; 2 records
• Walleye Sander vitreus1949 to 1978; 4 records
• White Sucker Catostomus commersonii1949 to 1959; 2 records
• Yellow Perch Perca flavescens1949 to 1978; 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 Sawyer County

• Reed Lake0.7 miles away
• Mud Lake0.9 miles away
• Pine Island Lake2.0 miles away
• Clear Lake2.6 miles away
• Lovejoy Lake2.6 miles away
• Burns Lake3.0 miles away

All Sawyer 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
• Regulations linkWisconsin DNR fishing regulations (linked, not restated), 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
• Depth map linkWisconsin DNR lake maps list, checked Oct 24, 2026

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