URBAN PROGRAMS & RESOURCES
SOIL AND WATER CONSERVATION DISTRICT
Loess Hills in Western Pottawattamie County
Urban development is rapidly taking place in the Loess Hills. The Loess Hills are Western Pottawattamie County's most distinctive landscape and Iowa's most fragile landform in susceptibility to erosion. When loess soils are disturbed, the threat to surface water is significant. Soil erosion rates are so high that the amount of eroded sediment carried in streams draining the Loess Hills is among the highest in the United States.
Projects for Urban Communities
A rain barrel is a water tank which is used to collect and store water runoff, typically from rooftops via rain gutters. the soft "rain water" stored in these barrels can be used for many things including: flushing toilets, washing machines, watering gardens, washing cars or for agricultural use. In arid climates, rain barrels are often used to store water during the rainy season for use during the drier periods. Rian barrels are becoming very popular in both rural and urban areas. They are easy to build and are now available to purchase from retailers.
Planting a rain garden helps reduce storm water runoff and improves water quality in local creeks, ponds, lakes and rivers. These gardens are designed to capture storm water runoff and hold it, allowing the water to infiltrate through the soil back to the ground water. You will want to place your garden to allow runoff to enter by natural flow or by directing downspouts to the garden.
Pervious pavement/cement is a special type of concrete with high porosity. It is designed to allow percolation or infiltration of storm water through the surface into the soil to reduce runoff. By infiltrating storm water on-site, the amount of water and pollution flowing into storm sewers and river/streams is greatly reduced.
Provided by National Association of City Transportation Officials