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Results of the 2019 Citizen-Led Water Quality Monitoring of Lake Wallenpaupack

5/12/2020

6 Comments

 
In 2019, Lacawac’s PLEON program started a citizen-led water quality monitoring program on Lake Wallenpaupack. Lake Wallenpaupack is the 3rd largest lake in Pennsylvania and is an important economic resource for the area. This program trains lake community members as citizen scientists in order to collect water quality data from many locations around the lake over many time points. These data can then be used to identify pristine or problem areas and identify changes in water quality over time.

Thank you to our 2019 Lake Wallenpaupack citizen scientists: Bill Leishear, Peter Paul Olszewski, Sheryl McClosky, the Bouchard Family, Terri Marcellus, Quinn Williams, Sinclaire Ogof, Mary Ellen Bentler, and the Heck Family! These dedicated volunteers recorded lake temperature, Secchi depth (a measure of water clarity), water color, and the types of particles present weekly during June, July, and August. They also collected water samples which were analyzed at the Lacawac Environmental Laboratory for the amount of algae in the water.

One of the major findings of the 2019 program was the lake-wide algae bloom that was present during much of the summer. Water samples collected by citizen scientists showed a marked increase in the chlorophyll concentration in the lake staring in mid-July. Chlorophyll is the green pigments found in algae cells and is used as a measure of the amount of algae present. This increase in algae abundance was seen across all sampling locations.

Around the same time, citizen scientists recorded a decrease in Secchi depth. Secchi depth is an indication of water clarity. It is measured by lowering a black and white disk straight down into the water. The depth at which the disk just disappears from view is the Secchi depth. Lakes with clear water have deeper Secchi depths than those with more murky or dark water. The fact that Secchi depth declined in Wallenpaupack at the same time the chlorophyll concentration increased suggests that the algae bloom was negatively impacting water clarity.

The full 2019 Wallenpaupack Citizen-Led Water Quality Report is available on our website. The 2020 program is accepting volunteers now (more details found in this issue of Forest Notes). One of the key questions moving forward is how often does Wallenpaupack experience prolonged, lake-wide algae blooms such as the one observed in 2019?

 

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Figure 1: The 2019 Wallenpaupack sampling sites
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Figure 2: Chlorophyll a concentration (a proxy for algae abundance) over time in all sites. Blue, yellow, and gray symbols represent SW, NE, and mid-lake sites.
6 Comments
Rick Shema link
6/9/2020 06:24:59

I'd like to become a citizen scientist to provide water samples of Lake Wallenpaupack. I live on Sunny Point and have a boat.

Thank you!

Rick Shema
808-291-9949

Reply
Susan Pavone
9/1/2020 09:55:30

I’d like to send samples from my area, Spinnler Point Cove

Reply
Scott Spinucci
12/11/2021 20:29:25

I’d like to volunteer. I ran an environmental non-profit that did water monitoring on the Susquehanna River, a couple decades ago.

Reply
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LACAWAC SANCTUARY FOUNDATION
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570.689.9494 - info@lacawac.org
Lacawac Sanctuary Field Station and Environmental Education Center is an independent, non-profit, environmental education organization located on the shore of Lake Wallenpaupack in the Northern Poconos.  We operate solely on grants and private donations from people like you.
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