Maple Leaf — Minnesota lake report

Latest published observations

Dated observations and regulatory status are kept distinct.

assessment — cycle

2024publication date: 2024-04-25regulatory evidence · source: assessments

assessment — lake status

unknownpublication date: 2024-04-25regulatory evidence · source: assessments

ice — latest in

2023-11-24observation date: 2023-11-24observed evidence · source: ice_phenology

ice — latest out

2024-04-17observation date: 2024-04-17observed evidence · source: ice_phenology

water levels — latest date

2026-05-26observation date: 2026-05-26observed evidence · source: water_levels

water levels — latest value

1310.79 footobservation date: 2026-05-26observed evidence · source: water_levels

water quality — monitored clarity ft

7.5 footobserved evidence · source: lake_summary_slim

water quality — monitored clarity year

2011observed evidence · source: lake_summary_slim

Water level

The selected observation names its datum and series; incompatible datums are never combined.

water levels — datum

NGVD 29observed evidence · source: water_levels

water levels — series id

69070000:datum:b99559e92bobserved evidence · source: water_levels

water levels — station identity

No published valueobserved evidence · source: water_levels

Ice-in and ice-out

Ice-in, ice-out, incomplete seasons, programs, and qualifying trends remain separate.

ice — latest by program

[{"latestIceInDate":"2008-11-19","latestIceOutDate":null,"latestMatchedDurationDays":null,"latestMatchedSeasonStartYear":null,"programId":"MNDNR-LAKESDB","programLabel":"Minnesota DNR Lakes-DB"},{"latestIceInDate":"2023-11-24","latestIceOutDate":"2024-04-17","latestMatchedDurationDays":145,"latestMatchedSeasonStartYear":2023,"programId":"MNDNR-LLMMP","programLabel":"Minnesota DNR Lake Level Minnesota Monitoring Program"},{"latestIceInDate":"2017-11-10","latestIceOutDate":"2014-05-05","latestMatchedDurationDays":160,"latestMatchedSeasonStartYear":2007,"programId":"MNPCA","programLabel":"Minnesota Pollution Control Agency"}]observed evidence · source: ice_phenology

ice — out trend days per decade

2.54 days/decadeapplication_derived evidence · source: ice_phenology · lake_report.v1_projection@1.0.0

Water clarity and observed water quality

Observed monitoring and modeled satellite estimates are separate evidence surfaces.

water quality — clarity trend

improvingapplication_derived evidence · source: lake_summary_slim · lake_report.v1_projection@1.0.0

water quality — satellite clarity

3.5 metermodeled evidence · source: water_quality_satellite · lake_report.v1_projection@1.0.0

water quality — satellite latest year

2025modeled evidence · source: water_quality_satellite · lake_report.v1_projection@1.0.0

Fish survey and abundance

fisheries — abundance species evidence

{"BLC":{"comparisonType":"source_provided_quartile","cpue":2.11,"cpueUnit":"fish/set","status":"Common"},"BLG":{"comparisonType":"source_provided_quartile","cpue":5,"cpueUnit":"fish/set","status":"Common"},"HSF":{"comparisonType":"statewide_species_gear_percentile","cpue":0.22,"cpueUnit":"fish/set","status":"Present"},"LMB":{"comparisonType":"source_provided_quartile","cpue":0.22,"cpueUnit":"fish/set","status":"Present"},"NOP":{"comparisonType":"source_provided_quartile","cpue":4.17,"cpueUnit":"fish/set","status":"Common"},"PMK":{"comparisonType":"source_provided_quartile","cpue":1.67,"cpueUnit":"fish/set","status":"Common"},"WAE":{"comparisonType":"source_provided_quartile","cpue":2.17,"cpueUnit":"fish/set","status":"Common"},"WTS":{"comparisonType":"source_provided_quartile","cpue":0.17,"cpueUnit":"fish/set","status":"Present"},"YEP":{"comparisonType":"source_provided_quartile","cpue":0.17,"cpueUnit":"fish/set","status":"Present"}}observed evidence · source: fish

fisheries — latest lake survey date

2016-09-12observation date: 2016-09-12observed evidence · source: lake_summary_slim

fisheries — selected abundance survey date

2016-09-12observation date: 2016-09-12observed evidence · source: fish

fisheries — species count

9observed evidence · source: lake_summary_slim

fisheries — survey count

4observed evidence · source: lake_summary_slim

Stocking history

fisheries — stocking latest year

2019management evidence · source: stocking · lake_report.v1_projection@1.0.0

fisheries — stocking recent cutoff year

2017management evidence · source: stocking · lake_report.v1_projection@1.0.0

fisheries — stocking recent events by species

{"Walleye":2}management evidence · source: stocking · lake_report.v1_projection@1.0.0

fisheries — stocking recent statement

2 recorded stocking events since 2017. Source records currently extend through 2019.generation date: 2026-07-23management evidence · source: stocking · lake_report.v1_projection@1.0.0

fisheries — stocking source through year

2019management evidence · source: stocking · lake_report.v1_projection@1.0.0

fisheries — stocking total events

5management evidence · source: stocking · lake_report.v1_projection@1.0.0

Official AIS listing

This is regulatory listing status, not occurrence evidence.

ais — official status

Not listedregulatory evidence · source: lake_summary_slim

AIS occurrence evidence

Occurrence evidence cannot create or change an official infestation listing.

No applicable published fact.

Public access and depth contours

access — status

Public access unknownmanagement evidence · source: lake_summary_slim · lake_report.v1_projection@1.0.0

access — types

[]management evidence · source: lake_summary_slim · lake_report.v1_projection@1.0.0

bathymetry — available

Yesgeographic evidence · source: lake_summary_slim · lake_report.v1_projection@1.0.0

Public-land and road context

Ownership, management, easements, designations, and included mapped roads remain separate context facts.

public land — designation nearest meters

No published value metergeographic evidence · source: public_land_context · public_land.nearest_boundary_distance@1.0.0

public land — designation shoreline adjacent percent

0 percentapplication_derived evidence · source: public_land_context · public_land.shoreline_adjacency@1.0.0

public land — easement nearest meters

No published value metergeographic evidence · source: public_land_context · public_land.nearest_boundary_distance@1.0.0

public land — easement shoreline adjacent percent

0 percentapplication_derived evidence · source: public_land_context · public_land.shoreline_adjacency@1.0.0

public land — management nearest meters

1278.0484647203984 metergeographic evidence · source: public_land_context · public_land.nearest_boundary_distance@1.0.0

public land — management shoreline adjacent percent

0 percentapplication_derived evidence · source: public_land_context · public_land.shoreline_adjacency@1.0.0

public land — other interest nearest meters

No published value metergeographic evidence · source: public_land_context · public_land.nearest_boundary_distance@1.0.0

public land — other interest shoreline adjacent percent

0 percentapplication_derived evidence · source: public_land_context · public_land.shoreline_adjacency@1.0.0

public land — ownership nearest meters

1278.0484394239822 metergeographic evidence · source: public_land_context · public_land.nearest_boundary_distance@1.0.0

public land — ownership shoreline adjacent percent

0 percentapplication_derived evidence · source: public_land_context · public_land.shoreline_adjacency@1.0.0

roads — density km per sq km

1.3458 km/km2application_derived evidence · source: road_context · road_context.road_density@1.0.0

roads — eligible buffer area square meters

6440000 square meterapplication_derived evidence · source: road_context · road_context.eligible_buffer_lattice@1.0.0

roads — included length meters

8667.18 meterapplication_derived evidence · source: road_context · road_context.included_length_within_one_kilometer@1.0.0

roads — nearest included meters

13.72 metergeographic evidence · source: road_context · road_context.nearest_included_road_distance@1.0.0

roads — nearest major meters

11168.12 metergeographic evidence · source: road_context · road_context.nearest_major_road_distance@1.0.0

roads — united states coverage complete

Yesapplication_derived evidence · source: road_context · road_context.united_states_source_coverage@1.0.0

Sources, dates, methods, and corrections

Provenance catalog: export_provenance.v1-ca646c5ba79e.json (SHA-256 ca646c5ba79eec8b835ffaae7a9c07b79ec2d768501961bb0393b3727489d5a2).

Methods · Report a correction for DOW 69070000