Fishery Status Update Butternut-Schnur Lake Association Meeting - - PowerPoint PPT Presentation

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Fishery Status Update Butternut-Schnur Lake Association Meeting - - PowerPoint PPT Presentation

Oct 15, 2023 172 likes •474 views

Fishery Status Update Butternut-Schnur Lake Association Meeting September 10, 2016 2014 Walleye Population Estimate Walleye Recruitment in Butternut Lake Fall Electrofishing Surveys 1986-2015 140 GLIFWC 120 WDNR Average for 2293 surveys of

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Butternut-Schnur Lake Association Meeting September 10, 2016

Fishery Status Update

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2014 Walleye Population Estimate

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20 40 60 80 100 120 140 Walleye fingerlings/mile GLIFWC WDNR

Average for 2293 surveys of walleye populations sustained by natural reproduction in the Ceded Territory (1990 – 2015) Threshold for natural reproduction > 5/mile

Walleye Recruitment in Butternut Lake

Fall Electrofishing Surveys 1986-2015

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Walleye recruitment in area lakes—Fall 2015

20 40 60 80 100 120 140 Chippewa Flowage Sand Lake Butternut Lake Pike Lake Solberg Lake Round Lake Lac Courte Orielles Flambeau Flowage Connors Lake

Number age-0 walleye per mile of shoreline electrofishing

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Walleye recruitment in area lakes

Fall 2010, 2013, and 2015

20 40 60 80 100 120 140 Chippewa Flowage Flambeau Flowage Butternut Lake Pike Lake Round Lake Lac Courte Orielles Connors Lake Fall 2010 Fall 2013 Fall 2015

Number age-0 walleye per mile of shoreline electrofishing

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100 200 300 400 500 600 700 800

27-year average = 212

Tribal Walleye Harvest since 1985 Butternut Lake

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2016 Tribal Declarations and Harvest

Butternut Lake Safe Harvest Declared Harvest Walleye 766 727 727 Muskellunge 16 9

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2014 Tribal Declarations and Harvest

Butternut Lake Safe Harvest Declared Harvest Walleye 359 341 271 Muskellunge 16 9 4

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2015 Tribal Declarations and Harvest

Butternut Lake Safe Harvest Declared Harvest Walleye 951 570 537 Muskellunge 17 10 1

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1 2 3 4 5 6 7

Tribal Musky Harvest since 1985 Butternut Lake

15-year average = 2.4

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Panfish Harvest Regulations

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Musky Rule Proposal

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Musky Rule Proposal

Why?

  • Simplify fishing rules

How?

  • 28-in. MLL → no MLL
  • 45-in. MLL → 50-in MLL

Where?

  • Butternut & Solberg

When?

  • WCC spring 2017 hearings

Status?

  • Shelved
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Hoffmann Rocks Boat Landing

  • Large-scale renovations (planned)

– “Off the radar…, Not even close…, No time soon…”

  • Small-scale improvements

– Boarding dock – Shore interface – Signs installed/relocated

  • Routine maintenance

– Mowing (monthly) – Parking lot line painting (fall 2016)

  • Monitoring

– Toilet vault (not leaking) – Power loading scour hole (next summer)

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Fish Crib Project

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Healthy Lakes Initiative

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Healthy Lakes Initiative

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New culvert on Schnur Creek

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←Upstream habitat Downstream habitat→

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Ideal culvert placement

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New culvert on Schnur Creek

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“Perched” culvert

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New aquatic weed in Schnur Lake???

Looks like green cotton candy

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Filamentous green algae

  • Spirogyra
  • Mougeotia
  • Zygnema

Often blooms near

  • Groundwater seeps
  • Direct runoff
  • Aquatic plants
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Fishery Information

Survey Summaries

http://dnr.wi.gov/topic/fishing/north/trtysprngsrvys.html

Fishery Management Plans

http://dnr.wi.gov/water/basin/upchip/