These line drawings are from the Wisconsin Water Resources Clip Art Collection developed by the Environmental Resources Center,University of Wisconsin-Extension in cooperation with the Wisconsin Department of Natural Resources under funding from theWisconsin Priority Watershed Program, the Basin Education Program and the Wisconsin Lakes Partnership. Contributingartists: Lynne Bergschultz, Joe Heller, Chris Pike, Jerry Scott, and Carol Watkins. The CD may be ordered for $35 from UW-Extension Publications, 333 W. Miflin ST., Madison, WI 53703 or Tel: 608-262-3346. These illustrations may be used withoutpermission for educational, non-profit purposes. For more information, contact the Environmental Resources Center at 608-262-1369
Lesson 4 Student Activity Solving Water Quality Concerns:Best Management Practices (BMPs) Answer Key forPhotos and Line DrawingsStudent Directions:1) Describe one water quality problem.2) Draw one Best Management Practice (BMP) in the picture and describe how that will prevent orreduce water pollution.
BMPs – Answer Key
Problem:
The pile of topsoil is
being carried by
storm water runoff into
the storm drain.
BMP:
The pile of topsoil
is contained to
prevent it from being
washed away and
carried by storm water
runoff into the storm
drain.
Construction
Problem:
When it rains, the parking lot
runoff flows directly into a
storm drain, carrying
pollutants with it (oil, gas, trash).
BMP:
The runoff goes into a settling pond whereit can recharge groundwater and allow timefor pollutants to settle to the bottom.Leaving parking lots unpaved, usingpervious asphalt, and adding landscapingto parking lots are more good ways toincrease groundwater infiltration andprevent polluted runoff from reachingstreams and lakes.
Parking Lots
Problem:
When it rains, storm water runoff carrieslawn fertilizers and pesticides directly intolakes. Unvegetated shorelines are alsomore easily eroded, adding sediment to thelake and burying aquatic organisms.
BMP:
Maintain a vegetation buffer alongshorelines to filter out contaminants. Theroots of native shrubs and trees hold thesoil in place. Grasses and other plantsslow runoff allowing time for contaminantsto settle out.
Shoreline Development
Animal Feedlot
Problem:
Animals wastes from feedlots
carries bacteria, excessnutrients, sediment, and other
contaminants into nearbystreams.
BMP:
Keep livestock away from
streams and allow shrubs
and trees to grow along
streambanks so they can
filter out pollutants and
protect water quality.