Upper Prior — 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

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

ice — latest in

2025-12-04observation date: 2025-12-04observed evidence · source: ice_phenology

ice — latest out

2026-03-29observation date: 2026-03-29observed evidence · source: ice_phenology

water levels — latest date

2026-04-06observation date: 2026-04-06observed evidence · source: water_levels

water levels — latest value

902.09 footobservation date: 2026-04-06observed evidence · source: water_levels

water quality — monitored clarity ft

4.4 footobserved evidence · source: lake_summary_slim

water quality — monitored clarity year

2025observed 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

70007200: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":"2014-11-15","latestIceOutDate":null,"latestMatchedDurationDays":null,"latestMatchedSeasonStartYear":null,"programId":"MNDNR","programLabel":"MNDNR"},{"latestIceInDate":"2008-11-26","latestIceOutDate":"2008-04-21","latestMatchedDurationDays":null,"latestMatchedSeasonStartYear":null,"programId":"MNDNR-LAKESDB","programLabel":"Minnesota DNR Lakes-DB"},{"latestIceInDate":"2008-11-25","latestIceOutDate":"2010-03-31","latestMatchedDurationDays":130,"latestMatchedSeasonStartYear":2008,"programId":"MNDNR-LLMMP","programLabel":"Minnesota DNR Lake Level Minnesota Monitoring Program"},{"latestIceInDate":"2014-11-15","latestIceOutDate":"2025-03-25","latestMatchedDurationDays":134,"latestMatchedSeasonStartYear":2014,"programId":"MNDNR-SCO","programLabel":"Minnesota DNR State Climatology Office"},{"latestIceInDate":"2025-12-04","latestIceOutDate":"2026-03-29","latestMatchedDurationDays":115,"latestMatchedSeasonStartYear":2025,"programId":"MNPCA","programLabel":"Minnesota Pollution Control Agency"}]observed evidence · source: ice_phenology

ice — out trend days per decade

-1.47 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

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

water quality — observed latest secchi ft

4.4 footobserved evidence · source: water_quality

water quality — observed latest year

2025observed evidence · source: water_quality

water quality — observed sampling through

2025-09-26observation date: 2025-09-26observed evidence · source: water_quality

water quality — satellite clarity

1.49 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

{"BLB":{"comparisonType":"source_provided_quartile","cpue":1.75,"cpueUnit":"fish/set","status":"Present"},"BLC":{"comparisonType":"source_provided_quartile","cpue":16.67,"cpueUnit":"fish/set","status":"Abundant"},"BLG":{"comparisonType":"source_provided_quartile","cpue":39.44,"cpueUnit":"fish/set","status":"Abundant"},"BRB":{"comparisonType":"source_provided_quartile","cpue":0.25,"cpueUnit":"fish/set","status":"Present"},"CAP":{"comparisonType":"source_provided_quartile","cpue":0.44,"cpueUnit":"fish/set","status":"Present"},"GOS":{"comparisonType":"source_provided_quartile","cpue":0.11,"cpueUnit":"fish/set","status":"Present"},"GSF":{"comparisonType":"presence","cpue":null,"cpueUnit":null,"status":"Present"},"HSF":{"comparisonType":"statewide_species_gear_percentile","cpue":1,"cpueUnit":"fish/set","status":"Common"},"LMB":{"comparisonType":"source_provided_quartile","cpue":0.56,"cpueUnit":"fish/set","status":"Common"},"NOP":{"comparisonType":"source_provided_quartile","cpue":6,"cpueUnit":"fish/set","status":"Common"},"PMK":{"comparisonType":"source_provided_quartile","cpue":3.89,"cpueUnit":"fish/set","status":"Common"},"WAE":{"comparisonType":"source_provided_quartile","cpue":6.75,"cpueUnit":"fish/set","status":"Common"},"WHB":{"comparisonType":"source_provided_quartile","cpue":2,"cpueUnit":"fish/set","status":"Common"},"WHC":{"comparisonType":"presence","cpue":null,"cpueUnit":null,"status":"Present"},"WTS":{"comparisonType":"source_provided_quartile","cpue":2.75,"cpueUnit":"fish/set","status":"Common"},"YEB":{"comparisonType":"source_provided_quartile","cpue":1.33,"cpueUnit":"fish/set","status":"Common"},"YEP":{"comparisonType":"source_provided_quartile","cpue":3.75,"cpueUnit":"fish/set","status":"Common"}}observed evidence · source: fish

fisheries — latest lake survey date

2024-07-29observation date: 2024-07-29observed evidence · source: lake_summary_slim

fisheries — selected abundance survey date

2024-07-29observation date: 2024-07-29observed evidence · source: fish

fisheries — species count

16observed evidence · source: lake_summary_slim

fisheries — survey count

16observed evidence · source: lake_summary_slim

Stocking history

fisheries — stocking latest year

2023management 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":9}management evidence · source: stocking · lake_report.v1_projection@1.0.0

fisheries — stocking recent statement

9 recorded stocking events since 2017. Source records currently extend through 2023.generation date: 2026-07-23management evidence · source: stocking · lake_report.v1_projection@1.0.0

fisheries — stocking source through year

2023management evidence · source: stocking · lake_report.v1_projection@1.0.0

fisheries — stocking total events

22management evidence · source: stocking · lake_report.v1_projection@1.0.0

Official AIS listing

This is regulatory listing status, not occurrence evidence.

ais — current extent scopes

["whole_waterbody"]regulatory evidence · source: ais

ais — current listing count

2regulatory evidence · source: ais

ais — current species

["Eurasian watermilfoil","Zebra mussel"]regulatory evidence · source: ais

ais — official status

Listedregulatory evidence · source: ais

AIS occurrence evidence

Occurrence evidence cannot create or change an official infestation listing.

ais — latest occurrence date

2025-08-10observation date: 2025-08-10observed evidence · source: ais_occurrences

ais — occurrence count

9observed evidence · source: ais_occurrences

ais — occurrence species

[]observed evidence · source: ais_occurrences

Public access and depth contours

access — documented listing count

1management evidence · source: access · lake_report.v1_projection@1.0.0

access — status

Public access documentedmanagement evidence · source: access · lake_report.v1_projection@1.0.0

access — types

["CO"]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

No published value 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

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

public land — other interest shoreline adjacent percent

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

public land — ownership nearest meters

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

public land — ownership shoreline adjacent percent

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

roads — density km per sq km

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

roads — eligible buffer area square meters

10435200 square meterapplication_derived evidence · source: road_context · road_context.eligible_buffer_lattice@1.0.0

roads — included length meters

69050.01 meterapplication_derived evidence · source: road_context · road_context.included_length_within_one_kilometer@1.0.0

roads — nearest included meters

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

roads — nearest major meters

663.68 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 70007200