By Christina Papenfuss,
Soil Conservationist, Natural Resources
Conservation Service (NRCS)
Do you have a problem with a gully or washout in your field? A grassed waterway or grade stabilization structure can help. These practices can stop a gully and provide a place for water to move from your field as to not cause erosion. Grassed waterways are usually paired with grade stabilization structures, otherwise known as earthen dams. They are inexpensive ways to stop gullies and stop your soil from washing off your field and into the creeks and rivers.
Grassed Waterways
Grassed waterways are constructed graded channels that are seeded to grass. The vegetation slows the water and the grassed waterway conveys the water to a stable outlet. A technician will gather some information to determine the depth and width that is needed to convey the water at a non-erosive velocity. The drainage area, soils, and land use that make up the area in that drainage area are all taken into account when designing the waterway.
Grade Stabilization Structures
Grade stabilization structures or earthen dams are practices that stop gully erosion at the edge of a field. They are used to bring water from one elevation to another in a controlled manner. As with grassed waterways, a technician will gather information to properly design the grade stabilization structure. In addition to the drainage area, soils and landuse, the amount of storage space behind the structure is determined to safely hold the water before it runs out a pipe.
Maintenance
Proper maintenance will protect your investment in a grassed waterway. Lift implements out of the ground before crossing the waterway. Don’t plant through the grassed waterways. Maintain the designed width of the grass area. Don’t plant end rows along the side of the waterway, as they contribute to failure. Don’t use the waterways as a road. Vehicle tire tracks can lead to the formation of a gully.
If the grade stabilization structure is built properly, very little maintenance should be needed. However, the structure should be checked regularly to repair any problems that do happen. A good time to check is after a rain event. Fix washed out areas by replacing the soil and reseeding it with grass.
Technical Help
Technical help is available and no charge for our assistance. Call the NRCS and Root River staff to set up an appointment. You may be eligible to receive financial assistance through a state or federal program. The NRCS and Root River staff will explain any programs that are available so you can make the best decision for your operation. All programs and services are voluntary.