Lake Stewardship 2022

July 23rd

Winona and Lori paddled the lake early morning, before the motor boats start at 10:am. We did the Secchi disc reading to measure water transparency of turbidity.

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Prospect Lake Aquatic Plant Survey

Sampling Date: September 17, 2022

Volunteers: Ron Delange, Joanne Delange, Kitty Lloyd, Winona Pugh

To enable safe social distancing the number of volunteers was limited to 4 with assigned tasks to maintain established protocols.

Due to extreme low water levels there is a significant difference in depth sample sites

Plant Sampling Sites:

Site # 1: North 48*30’25” X West 123*26’29”

Site # 2: North 48*30’28” X West 123*26’41”

Site # 3: North 48*30’47” X West 123*26’48”

Site # 4: North 48*30’47 X West 123*26’27”

Site # 5: North 48*31’ 5” X West 123*26’25”

Site # 6: North 48*30’47” X West 123*26’29”

Site # 7: North 48*30’47” X West 123*26’54

Site # 8: North 48*30’47” X west 123* 26’54”

Sample Location:

Site 1 Southern Bay

@ 2 meters

  • Vallisneria americana (eel grass) 
  • Potamogeton robbinsii (fern pondweed)
  • Myrophyllum spicatum (eurasian water milfoil 

@ 4 meters

  • Ceratophyllum demersum (coontail)
  • Vallisneria americana (eel grass) 
  • Myriophyllum sibericum (northern water milfoil) native 
  • Myrophyllum spicatum (eurasian water milfoil) invasive 
  • Elodea canadensis (Canada waterweed) 

@ 6 meters – Ceratophyllum demersum (coontail)

Site 2: Blethman Creek 

@ 2 meters

  • Myriophyllum sibericum (northern water milfoil) native 
  • Myrophyllum spicatum (eurasian water milfoil) invasive 
  • Vallisneria americana (eel grass) 
  • Ceratophyllum demersum (coontail) 

@ 4 meters

  • Myriophyllum sibericum (northern water milfoil) native 
  • Myrophyllum spicatum (eurasian water milfoil) invasive 
  • Ceratophyllum demersum (coontail) 
  • Vallisneria americana (eel grass) 
  • Elodea canadensis (Canada waterweed) 

@ 6 meters 

  • Ceratophyllum demersum (coontail) 
  • Myriophyllum sibericum (northern water milfoil) native 
  • Myrophyllum spicatum (eurasian water milfoil) invasive

Site 3  Estelline Bay

@ 2 meters 

  • Myriophyllum sibericum (northern water milfoil) native 
  • Myrophyllum spicatum (eurasian water milfoil) invasive 
  • Ceratophyllum demersum (coontail) 
  • Vallisneria americana (eel grass) 
  • Elodea canadensis (Canada waterweed) 

@ 4 meters 

  • Myriophyllum sibericum (northern water milfoil) native 
  • Myrophyllum spicatum (eurasian water milfoil) invasive 
  • Ceratophyllum demersum (coontail)
  • Vallisneria americana (eel grass)
  • Elodea canadensis (Canada waterweed) 

@ 6 meters 

  • Myriophyllum sibericum (northern water milfoil) native 
  • Myrophyllum spicatum (eurasian water milfoil) invasive 
  • Ceratophyllum demersum (coontail)

Site 4  Northwest Bay

      @ 2 meters

  • Potamogeton robbinsii (fern pondweed) 
  • Ceratophyllum demersum (coontail) 
  • Vallisneria americana (eel grass) 
  • Myrophyllum spicatum (eurasian water milfoil) invasive 
  • Elodea canadensis (Canada waterweed) 

@ 4 meters 

  • Elodea canadensis (Canada waterweed) 
  • Vallisneria americana (eel grass) 
  • Myriophyllum sibericum (northern water milfoil) native 
  • Myrophyllum spicatum (eurasian water milfoil) invasive 

@ 6 meters 

  • Ceratophyllum demersum (coontail) 
  • Myriophyllum sibericum (northern water milfoil) native 
  • Myrophyllum spicatum (eurasian water milfoil) invasive 
  • Vallisneria americana (eel grass) 
  • Elodea canadensis (Canada waterweed)
  • Potamogeton pectinatus (Sago pondweed) now Stuckinia pectinata

Site 5: Killarney Creek

@ 2 meters 

  • Vallisneria americana (eel grass)  
  • Ceratophyllum demersum (coontail)  
  • Myriophyllum sibericum (northern water milfoil) native
  • Myrophyllum spicatum (eurasian water milfoil) invasive –moderate

@ 4 meters 

  • Ceratophyllum demersum (coontail) 

@ 6 meters – 

  • Ceratophyllum demersum (coontail) 

Site 6: Echo Bay

@ 2 meters

  • Vallisneria americana (eel grass) 
  • Ceratophyllum demersum (coontail) 
  • Myriophyllum sibericum (northern water milfoil) native
  • Myrophyllum spicatum (eurasian water milfoil) invasive 

@ 4 meters 

  • Ceratophyllum demersum (coontail) 
  • Potamogeton robbinsii (fern pondweed) 
  • Vallisneria americana (eel grass)  
  • Elodea canadensis (Canada waterweed) 
  • Myriophyllum sibericum (northern water milfoil) native
  • Myriophyllum spicatum (eurasian water milfoil) invasive
  • Nitella (algae)

@ 6 meters

  • Ceratophyllum demersum (coontail)

Site 7: shallow shelf

@ 2 meters

  • Potamogeton robbinsii (fern pondweed) 
  • Vallisneria americana (eel grass) 
  • Potamogeton amplifolius (big leaf pondweed) 
  • Myriophyllum sibericum (northern water milfoil) native
  • Myriophyllum spicatum (eurasian water milfoil) invasive 
  • Elodea canadensis (Canada waterweed)

@ 4 meters

  • Vallisneria americana (eel grass) 
  • Elodea canadensis (Canada waterweed) 
  • Myriophyllum sibericum (northern water milfoil) native
  • Myriophyllum spicatum (eurasian water milfoil) invasive

@ 6 meters

  • Potamogeton amplifolius (big leaf pondweed) 
  • Vallisneria americana (eel grass) 
  • Ceratophyllum demersum (coontail)
  • Potamogeton pectinatus (Sago pondweed) now Stuckinia pectinata
  • Myriophyllum sibericum (northern water milfoil) native
  • Myriophyllum spicatum (eurasian water milfoil) invasive

Site 8: shoreline extremely sloping to deepest point of the lake at 14 meters 2021 Samples taken from island shoreline

@ 2 meters 

  • Myriophyllum sibericum (northern water milfoil) native
  • Myriophyllum spicatum (eurasian water milfoil) invasive

@ 4 meters

  • no samples

@ 6 meters

  • no samples

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