Wisconsin Valley
Improvement Company
Improvement Company
Eau Pleine Dissolved Oxygen Monitoring and Isopleths
The
Eau Pleine Reservoir has been studied extensively by WVIC since the 
1970’s with
a focus on annual depletion of dissolved oxygen along with a host of other
water quality parameters. A system was
developed to monitor dissolved oxygen in the reservoir that has been
consistently used for decades to aid in operational decisions. This long-term data set continues to be
collected annually and analyzed to provide further insight and understanding of
reservoir dynamics.
1970’s with
a focus on annual depletion of dissolved oxygen along with a host of other
water quality parameters. A system was
developed to monitor dissolved oxygen in the reservoir that has been
consistently used for decades to aid in operational decisions. This long-term data set continues to be
collected annually and analyzed to provide further insight and understanding of
reservoir dynamics. Each
year during the winter months, dissolved oxygen and temperature profiles are
taken at 1 meter intervals from the bottom of the reservoir to the surface at
every river mile from the Eau Pleine Dam upstream to mile 18.3 at Balsam Road
(Spindler's Bridge). Using the data
collected weekly, staff utilizes computer software to produce an
"isopleth" which is a visual depiction of oxygen levels throughout the
water column in the original channel of the reservoir. Isopleths are an
example of a tool that can assist WVIC and WDNR staff in decision making
pertaining to operating the Eau Pleine aerator system and aid with other
resource management efforts. The isopleths are posted below and shared
with a variety of stakeholders and interested parties as a way to keep the
general public informed of current conditions and conceptualize oxygen trends
on the reservoir throughout the winter season.
2025 Eau Pleine Dissolved Oxygen Isopleths
2023 Eau Pleine Dissolved Oxygen Isopleths
2022 Eau Pleine Dissolved Oxygen Isopleths
2021 Eau Pleine Dissolved Oxygen Isopleths
1 1 Pages
| Downloads | |||
| Filename | Description | Date Added | |
ep3 02-08-2023 |
02/09/2023 | ||
03-15-2023 |
03/17/2023 | ||
ep301-25-2023 |
01/26/2023 | ||
02-08-2023.jpg
03-15-2023.jpg
ep3 01-25-20231.jpg