Minnesota DNR fisheries surveys · latest August 7, 2017
Spider Lake FishingAWater-quality grade A
Minnesota DNR surveys at Spider Lake average 11.45 largemouth bass per unit of sampling effort (CPUE) across 7 surveys. The most recent is a Standard Survey dated August 7, 2017. Length samples in the latest survey that recorded them ran 5–22 inches. In Cass County, Minnesota, Spider Lake carries an overall water-quality grade of A. Water clarity averages 10.2 feet of visibility, and there is one public boat landing. The survey figures on this page are Minnesota DNR's own; the water-quality grade comes from EPA Water Quality Portal samples. Neither is a forecast of today's bite.
Species recorded at Spider Lake
8 species on the Minnesota DNR list for this lake. A species on the list has been recorded here; it does not mean it is catchable today or in every part of the lake.
Stocking at Spider Lake
Minnesota DNR publishes a stocking history for this lake — which species went in, how many, and in which years. Read the years: a lake stocked in one year is not necessarily stocked in the next.
Getting on the water
1 public boat landing is recorded on Spider Lake. Minnesota DNR lists the public access sites, including ramp type and parking, in the documents below.
Survey results in full
Minnesota DNR surveys at Spider Lake average 11.45 largemouth bass per unit of sampling effort (CPUE) across 7 surveys. The most recent is a Standard Survey dated August 7, 2017. Length samples in the latest survey that recorded them ran 5–22 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Spider Lake A from EPA Water Quality Portal chemistry. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
7 surveys on file from MN DNR Fisheries. Most recent: 2017-08-07 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Yellow Perch | 23.84 | 0.13 lb |
| Black Bullhead | 17.63 | 0.37 lb |
| Brown Bullhead | 11.63 | 0.94 lb |
| Largemouth Bass | 11.45 | 1.11 lb |
| Pumpkinseed | 8.17 | 0.28 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE means more abundant in standardized sampling. This is not a weekly bite report.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Yellow Perch
Black Bullhead
Brown Bullhead
Largemouth Bass
From the 2017-08-07 survey
Spider Lake is an 85 acre lake located in the Foothills State Forest nine miles north of Leader in Cass County. Spider is fairly shallow, with 88% being 15' deep or less. A small public access is located on the west shore. Several campsites are located on the northern and eastern shore and are frequently used by ATV…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Spider Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — SpiderFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Spider (1131)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — SpiderFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — SpiderPublic Water Access Sites · MN DNR LakeFinder
Common questions
What fish are in Spider Lake?
Minnesota DNR surveys at Spider Lake average 11.45 largemouth bass per unit of sampling effort (CPUE) across 7 surveys. The most recent is a Standard Survey dated August 7, 2017. Length samples in the latest survey that recorded them ran 5–22 inches. Minnesota DNR lists 8 species for the lake in total. Those are survey results, not a catch report: a net set on one date measures what was in that net.
When was Spider Lake last surveyed?
The most recent fisheries survey on file for Spider Lake is dated August 7, 2017. Survey intervals vary by lake and by species; a gap of several years between surveys is normal and does not mean the record is missing.
Is Spider Lake stocked?
Minnesota DNR publishes a stocking history for Spider Lake. It records which species were released, in what numbers and in which years — the source documents are linked further down this page. A lake can be stocked in some years and not others, so read the years rather than assuming an annual release.
Does the water-quality grade tell me how Spider Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Spider Lake A from EPA Water Quality Portal chemistry. Catch rate is not a swim clearance and is not a weekly bite report.
Before you eat what you catch
A water-quality grade is not a consumption advisory. Mercury and PCB advice for Minnesota waters comes from MDH, and it is issued per species and per size class — a lake can grade well and still carry a meal limit on larger predator fish.
Where to stay near Spider Lake
Top-rated places to stay near Spider Lake
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