Stream Crossing

Stream crossings are a stabilized area or structure constructed across a stream to provide a travel way for people, livestock, equipment, or vehicles.  They improve water quality by reducing sediment, nutrient, organic, and inorganic loading of the stream, reduce streambank and streambed erosion and provide crossing for access to another land unit. This practice applies to all land uses where an intermittent or perennial watercourse exists and a ford, bridge, or culvert type crossing is desired for livestock, people, and/or equipment.

Stream crossings should be located in areas where the streambed is stable or where grade control can be provided to create a stable condition.
Avoid sites where channel grade or alignment changes abruptly, excessive seepage or instability is evident, overfalls exist, or large tributaries enter the stream. Wetland areas should be avoided if at all possible.

Locate crossings, where possible, out of shady riparian areas to discourage cattle loafing time in the stream. Stream crossings should provide a way for normal passage of water, fish and other aquatic animals within the channel during all seasons of the year. Stream crossings should be located where adverse environmental impacts will be minimized and considering the following:
• Effects on up-stream and down-stream flow conditions that could result in increases in erosion, deposition, or flooding.
• Short term and construction-related effects on water quality.
• Effects on fish passage and wildlife habitats. MN DNR should be consulted during the planning process to ensure that fish passage concerns are addressed.
• Effects on cultural resources.
• Overall effect on erosion and sedimentation that will be caused by the installation of the crossing and any necessary stream diversion.

Where stream crossings are used, evaluate the need for safety measures such as guardrails at culvert or bridge crossing, or water depth signage at ford crossings.