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