Decorah Lake (Juneau County)
Waterbody ID (WBIC): 1304600 — permanent page /lakes/1304600/.
Decorah Lake is in Juneau County; records show 314 acres and 1 DNR access-site record.
- Size
- 314 acres
- Lake type
- DRAINAGE
- Max depth
- 15 ft
- 1 documented public access site record (DNR access inventory)
- 4 fish species/groups with abundance categories (DNR lake page)
- Fish stocking documented through 2021 (DNR stocking records)
- Summer Secchi clarity median 2.3 ft (field measurements)
Plan your visit
- Lake directory: public landing — Yes
- Lake directory: public beach — No
- Lake directory: public park — Yes
- DNR public-access inventory: 1 documented access site record
- DNR public-access inventory: documented developed boat ramp
- No site qualifies for per-site Directions: the reviewed association or a published coordinate is missing, which is a data state, never evidence about access.
Each statement is bounded to its named source; absence of a record is never evidence of no access. The DNR access database may lag reality; posted signs at the landing are authoritative.
Verify at the DNR public boat access program page.
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Fishing
The DNR lake page publishes 4 fish species/groups with abundance categories — categories are source labels, never a population count.
DNR fish labels: Panfish—Common; Largemouth Bass—Present; Northern Pike—Present; not population counts.
Stocking records: 18 documented events through 2021, 61,845 fish total. Species: Walleye (Occasional), Northern Pike (Occasional), Largemouth Bass (Historic). Events in 2015 or later count as recent.
No fisheries survey population estimate is published for this lake in the covered report families.
Fishing limits — 2026-2027 season: 17 normalized rows across 17 species entries. Normalized from the DNR ruleset retrieved 2026-08-04. Source text remains authoritative.
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Detailed stocking history — load details
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2026-2027 retained fishing rules: 17 published rows for 17 species; effective through 2027-03-07. Check current DNR rules.
Normalized fishing-regulation rows — load details
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Water and setting
- Field-measured summer Secchi clarity: median 2.3 ft from 3 samples, latest sample 2019-08-29
No official DNR depth map is published for this lake.
Not published in the lake directory: official mean depth.
- AIS record: Chinese mystery snail — Verified, latest documented 2024-05-13
- AIS record: Curly-leaf pondweed — Verified, latest documented 1976-12-31
- AIS record: Eurasian watermilfoil — Verified (vouchered), latest documented 2004-08-01
Occurrence records come from a non-exhaustive DNR inventory; a record documents presence at observation time and a missing record is never evidence of absence.
- Public-land proximity (GIS proxy, not access evidence): mapped public land within 1,000 ft; nearest: Riverside Park (City of Mauston); ≈1.4% of shoreline buffer
- Shoreline development (landcover proxy, 2025 source): ≈44.9% developed land within 300 m, ≈21.4% impervious
- Road proximity (TIGER proxy, 2025 source): nearest secondary road (U.S., state, or county highway) ≈0 m; ≈7 km of road per km² within 1 km
Measured and satellite clarity records — load details
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Aquatic invasive species records — load details
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Data & sources
Published data families
- Fish species and abundance (DNR lake pages)
- Fish stocking history
- Fishing regulations (normalized snapshot)
- Directory access facts (landing, beach, park)
- Public access site inventory
- Field-measured Secchi clarity
- Aquatic invasive species occurrences
Original records: Wisconsin DNR lake page.
Missing values are unpublished, never zero; each fact above is bounded to its named source and date. Full sourcing detail: Data & methods.