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D

Emily Lake

Crow Wing County, MinnesotaEutrophic

On the scoring rubric Emily Lake grades a D: clarity at 3.0 ft and 53 µg/L of phosphorus keep it in the lower bracket for Crow Wing County. Secchi readings are the weakest of the scored parameters, suggesting suspended sediment or algal biomass dominates the optical signal.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. At only 13 ft deep, Emily Lake is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. The lake's 721 acres and 5.1 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Emily Lake ranks 119 of 120 in Crow Wing County — at the lower end of the locally monitored distribution.

Eurasian watermilfoil is established at Emily Lake, which can dampen recreational access and pressure the native plant community. The fishery includes walleye among the lake's 13 documented species — a notable draw for Minnesota anglers. Public access is available — the lake is on the Minnesota PCA public-access list. Ice-out has been recorded 23 times at Emily Lake, with a median around Apr 15. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-09-15. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Very murky, less than 3 ft of visibility. Phosphorus level: 53 µg/L. Trophic State Index: 61.

MetricValueGrade
Water Clarity (Secchi Depth)3 ftF
Phosphorus53 µg/LC
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)61Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth13 ft
Surface Area720.73 acres
Shoreline Length5.1 mi
Littoral Zone100%
Public AccessYes

Fish Species

black bullhead,black crappie,bluegill,bowfin (dogfish),brown bullhead,hybrid sunfish,largemouth bass,northern pike,pumpkinseed,walleye,white sucker,yellow bullhead,yellow perch

Click a species to see all Minnesota and Wisconsin lakes where it is found.

→ Best fishing times for Emily Lake (14-day solunar calendar)

→ Is it safe to eat fish from Emily Lake? (mercury & PFAS guide)

Emily Lake fishing regulations (limits, seasons, special rules)

Invasive & Introduced Species

Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.

Eurasian watermilfoil

Water Quality Trend: Improving

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.104 m/yr5
Phosphorus Improving-1 µg/L/yr5
See year-by-year chart →

Ice Season

Historical ice data from Minnesota DNR (38 observations).

Typical Ice-Out
Apr 15
Typical Ice-In
Nov 20

Estimated open water season: 219 days

EarliestLatest
Ice-Out2024-03-15 (2024)2013-05-11 (2013)
Ice-In2017-11-07 (2017)2016-12-07 (2016)

Most recent ice-out: 2024-03-15

Location

Loading map…

County Ranking

Ranked #119 of 120 lakes in Crow Wing County

Cleaner Lakes Within 30 Miles

Emily Lake holds Grade D. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Crow Wing County

DNR Fisheries Survey Summary

9 surveys on file from MN DNR Fisheries. Most recent: 2023-06-26 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Yellow Perch19.010.11 lb
Bluegill12.970.21 lb
Black Crappie10.630.25 lb
Largemouth Bass8.291.1 lb
Brown Bullhead3.390.99 lb
Walleye3.012.27 lb

CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.

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

321 fish · 410 in · 2023-06-26
208104045678910

Bluegill

119 fish · 38 in · 2023-06-26
56280345678

Black Crappie

874 fish · 410 in · 2023-06-26
5152580trophy 1045678910

Largemouth Bass

6 fish · 1418 in · 2023-06-26
3201415161718

From the 2023-06-26 survey

Emily Lake is a 664 acre lake located in Crow Wing County. The city of Emily is located off the northwest corner of the lake. Emily is a fairly shallow lake, with the deepest point only 15' deep. Water clarity is poor for this area, with a secchi disk reading of only 3.5'. A public access is located on the southwest…

Source: MN DNR LakeFinder Fisheries Lake Survey

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Emily Lake. 4 reports on file.

Reservoir Info (USACE NID)

Emily Lake is a man-made reservoir impounded by the Lake Emily (completed 1939), built primarily for recreation on the Little Pine River; gravity-type dam, 11 ft tall and 36 ft long.

Surface area
694 ac
Normal storage
7,403 ac-ft
Max storage
9,422 ac-ft
Drainage area
68 sq mi
Hazard class
Low
Owner
City of Emily

Source: USACE National Inventory of Dams, NID ID MN00052 · Operator website

EPA Impairment Status

Emily Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Nutrients (phosphorus, nitrogen)

Source: EPA ATTAINS assessment unit MN18-0203-00 · Official waterbody report

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Lake details from Minnesota DNR LakeFinder

Ice data from Minnesota DNR Climate

Most recent sample: 2024-09-15

Monitoring stations: 1