Waukegan River (Illinois)
modeling is complete
The Waukegan River, located in Lake County, Illinois, is a tributary
to Lake Michigan with a watershed area of 12 square miles. It has two
major sub-tributaries, the North and South Branches of the river. A
federal navigation channel and harbor are located approximately 1,000
feet north of the mouth of the Waukegan River. This watershed is a main
focus of the Waukegan lakefront redevelopment plan.
The Waukegan River watershed
is highly urbanized, containing only 13% undisturbed land. Bank erosion
in this area is a direct cause of sedimentation into Lake Michigan and
has also led to the failure of several hydraulic structures along the
river. In addition, the lack of a natural floodplain area has limited
the expansion of flow in the Waukegan River causing erosion to occur
in the channel itself. Erosion in the channel brings urban contaminants
and discharges, which affect the quality of the water and its sediments.
Currently, few storm water detention basins exist.
In assessing the Waukegan River watershed, the U.S. Army Corps of Engineers
selected the Stormwater Management Model (SWMM) v5.0
for the Waukegan River modeling project based on the model's ability
to analyze long-term simulations, analyze flow from urban sewer systems,
track sediment delivery and movement, and monitor pollutant loadings.
This model has the ability to evaluate the effects of Low Impact Development
(LID) designs such as rain gardens, permeable pavement, and rain barrels
on sediment delivery and stormwater runoff. SWMM v5.0 has a history
of past applications in watersheds similar to the Waukegan River basin.
A future phase of this project could include the development of a sediment
transport model for the Waukegan River using HEC-RAS.
Now that the SWMM v5.0 model
has been completed, a hands-on training workshop will
be held to teach interested users how to utilize the tool during the
technology transfer phase of the project and to obtain valuable user
feedback on the model and how it might be further refined. This
workshop has been planned for August 2011. All interested participants
are asked to contact David
Bucaro to register for the workshop.
Use and Applications
This model will allow state and local planning agencies to better assess
options for non-point source pollution prevention. This model also serves
to advise these agencies on dredging and disposal needs, Remedial Action
Plans (RAPs), and Lakewide Management Plans (LaMPs). This information
is intended to help restore the watershed and reduce sedimentation to
Lake Michigan. In the future this model will be used to apply a watershed
approach to sediment management, support measures reducing sediments
and pollutants to tributaries and reduce costs of navigation maintenance,
thereby reducing the need for sediment remediation.
Harbor Citizens Advisory Group (CAG)
Environmental Protection Agency Region V
Environmental Protection Agency
Department of Natural Resources
State Water Survey
County Stormwater Management Commission
County Soil & Water Conservation District
County Health Department
For more information
- or to obtain digital data for advanced modeling purposes - contact:
David F. Bucaro, P.E.
Chief, Economic Formulation & Analysis Section
US Army Corps of Engineers -
111 North Canal Street, Suite 600
Chicago, IL 60606-7206
Phone: (312) 846-5583