2020 Water Quality Study Activities
2020 data collection will build upon results from the 2019 study which are available here: Full 2019 Water Clarity Study
Evaluation of the water clarity: Interaction of epilimnion and metalimnion in regard to bioavailable phosphorus, chlorophyll, and zooplankton;
Interaction of lake layers and influence on algae growth. Evaluation of Lake Owen Water Clarity
Our science crew, led by Steve Schieffer, will collect additional data in 2020. This is Steve’s plan:
1. We collected ice out water samples and checked outflow volume in early May. We took temperature and oxygen profiles at this time. The lake mixed this spring, but in the South Deep Hole, it didn’t mix completely.
2. We are using a different lab this year that has more accurate phosphorus tests for low concentrations.
3. Periodic water chemistry collection will continue this year to expand our understanding of Lake Owen water quality.
Collect total phosphorus (TP) and total iron data in the hypolimnion (lake bottom layer) at the South Deep Hole near ice out, May, Sept, and fall overturn. This will help us determine if the lake bottom sediment is releasing P or if the P is settling to the lake bottom. This is important to know for understanding P movement from the hypolimnion.
Monitor TP, Soluble Reactive Phosphorus (SRP), chlorophyll, secchi depth and PAR at the North and South Basins Deep Holes monthly from June – Oct. with integrated samples.
Monitor TP, SRP, and chlorophyll Otter Bay monthly June – Sept.
4. Our GIS specialist, Jake Macholl, is working on watershed land cover analysis. This will tell us more about watershed influence on lake water quality.
5. We will be identifying sample sites and collecting samples that will reflect groundwater chemistry.
For a download of this report, go here: 2020 Water Quality Study