HomeMy WebLinkAboutOct2023 PRESENTATION_watershedWelcome!
Community Engagement Committee
October 19, 2023
District Managers
10/19/2023 2
District Staff
10/19/2023 3
Joni Giese
Patty DronenJeff Anderson
Emily Dick
Paul Nelson
Danielle Studer
Zach Nagel
10/19/2023 4
Collaborative
Planning &
Implementation
•Cities
•Townships
•Scott County
•SMSC
•Advisory Committees
•Scott SWCD
•Lake Associations
•Landowners
•Volunteers
Monitoring
Operations & Maintenance
Education & Outreach Regulations
Capital Projects
10/19/2023 5
Water Quality
•Maintain or improve quality of water resources
Aquatic Invasive Species
•Manage existing and prevent new Aquatic Invasive Species (AIS)
Flood Mitigation
•Reduce Flooding Impacts
Three Guiding
Principles
Flood Reduction Success - Emergency Access
*in a 25-year, 30-day storm event
Six out of 8 previously flooded roads will now be accessible to
emergency vehicles*
Flood Reduction Success - How?
1) FASTER EXIT 2) SLOWER FILL
Prior Lake Outlet Channel built in 1983 to create
an outlet for our naturally landlocked watershed
Sutton Lake Outlet slows the flow of water
downstream during flood conditions
Water Quality Success- Spring Lake
In 2022 the
average depth of
clarity was over
7 feet deep
2017
2019
Spring Lake Report Card
Water Quality Success - How?
REMOVE & PREVENT
EXCESSIVE LAKE NUTRIENTS
This Photo by Unknown Author is licensed under CC BY-NC
Ferric Chloride Water Treatment System
Alum Treatment
Raingardens
Field buffer strips
Upper Prior Lake Report Card
Upper Prior Lake Plant Coverage & Density
August 2022
Lower Prior Lake Report Card
Lower Prior Lake Plant Coverage and Density
Summer 2014 Summer 2022
Aquatic Invasive Species Success - Upper Prior Lake Carp
Significantly reduced carp populations in Upper Prior Lake
453.5 453.5
332.9 303.8
249.9
211 190.2
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
0.0
50.0
100.0
150.0
200.0
250.0
300.0
350.0
400.0
450.0
500.0
2017 2018 2019 2020 2021 2022 2023
Ca
r
p
R
e
m
o
v
a
l
(
l
b
s
)
St
a
r
t
o
f
Y
e
a
r
P
o
p
u
l
a
t
i
o
n
(
k
g
/
h
a
)
Upper Prior Lake
Carp Removals (lbs)Population (kg/ha)Maintenance Threshold
Baited Box Traps
Hoop Traps
Carp Management Success- How?
Seines: Commercial netters, consultants, & staff
Electrofishing
Baited Box Traps
Specialized Traps
Radio-tracking
Bluegill stocking
AIS Prevention and Rapid Response Plan
•Education and Public Outreach
•Watercraft Inspection and
Decontamination
•Plant Surveys and AIS Detector Training program
•Curly-leaf pondweed treatment
•Coordination with MN DNR
Chinese Mystery Snail
Reported August 2023
on Lower Prior Lake
•Large die-offs
•Carry parasites
Spread by movement of
equipment or as released
aquarium pets
Education and OutreachSummer Events Fall Events
Answers!
1. Common carp should be removed from the District’s lakes
because (choose all that apply):
1.They are big and eat the native fish.
2.They stir up the pollutants in the lakes.
3.They uproot native plants.
Answers!
2. True or False:
Every ten years the Watershed District is required to adopt
and submit its comprehensive plan to the state.
TRUE
Answers!
3. Which is NOT a current guiding principle of the Watershed
District’s 10-year plan.
1.Reducing impacts of flooding.
2.Managing Aquatic Invasive Species.
3.Maintaining boat ramps for lake access.
4.Improving water quality in lakes and streams.
Answers!
5. True or False:
The watershed district only serves Spring and Prior Lakes.
FALSE
Answers!
4. Which governmental entities are in or partly in the
watershed district (choose all that apply):
1.City of Prior Lake
2.Spring Lake Township
3.City of Shakopee
4.Scott County
5.Shakopee Mdewakanton Sioux Community
6.City of Savage
7.City of Credit River
8.Sand Creek Township
Scoring
If you got 5 questions right…Come on out to the Clean Water Clean-Up!
If you got 4 right…You may have been an “A” student at one of our raingarden or shoreline
restoration workshops
If you got 3 right…You qualify for a higher security clearance in our Carp Espionage
program
If you got 2 or 1 right…You may love to help us monitor for new AIS as a Detector
If you got 0 right… Come on out to the Clean Water Clean-Up!!
Thank you!
Questions?
Danielle Studer
dstuder@plslwd.org
952-440-0069