This time of year seems to be a never-ending battle with Climate Change. As the rain pours down, water levels in ditches, creeks, rivers and storm drains rise rapidly, increasing flood risk in urban and rural areas.
An adequate drainage system is the most common planned response to reduce flood risks on farmed land. Such a system involves maintaining watercourses, improving drainage and removing sediment that accumulates over time. Maintaining adequate drainage also requires clearing debris from channels, culverts and trash screens. Continual maintenance of a drainage system can become tiresome, but it is a critical component to well-drained and managed landscapes.
In-ditch and downstream conservation practices can help control water to protect landscapes. Water control structures like low-grade weirs, berms and swells can aid in slowing water flows to reduce the energy in drainage water from eroding channel bottoms and banks. Pipes with in-field slots — or risers with boards — also enable landowners to slow and control water movement.
There are several major benefits to managing land to be more resilient to heavy rains and less prone to flooding. Improving water infiltration — the rate at which water gets through the surface and into the soil — helps to prevent localized flooding and replenishes groundwater. Improved infiltration also can lead to potential increases in water held in soil. This benefit not only enhances water availability for plants, but also reduces runoff that can carry away nutrients and erode soil.
Leaving crop residue and/or incorporating living plants year-round can slow water flow and improve infiltration. Leaving residue and adding living cover helps to improve organic matter levels in the soil, which minimizes soil crusting or sealing. It also can improve soil water-holding capacity.
While proactive land management may seem like an unnecessary financial burden, protecting and investing in natural resources almost always saves money in the long run. Management and conservation help ensure adequate drainage, reduce flood risk and prevent minor erosion issues from becoming major concerns.
Eroding landscapes means land loss and can put livestock at risk for injury. Be aware of U.S. Department of Agriculture programs that address ongoing erosion battles. Some programs provide financial incentives to implement stream buffer zones or other conservation practices. Such practices and programs help protect land resources and slow the flow of runoff, intercept sediment and increase infiltration.
Helpful tools and climate calculators:
Link to Coastal Risk Screening Tool.
Link to Aqueduct’s Flood Risk Calculator. Coming soon!
Water Peace & Forecasting App
The Water, Peace and Security (WPS) partnership is a collaboration between the Netherlands Ministry of Foreign Affairs and a consortium of six partners: IHE Delft (lead partner), World Resources Institute (WRI), Deltares, The Hague Centre for Strategic Studies (HCSS), Wetlands International and International Alert.
The initiative is intended to become an open network that can bring together knowledge, capacities and activities directed at speeding up and scaling up preventative action in the context of water stress–induced conflict, migration or other forms of social destabilisation. To this end, the consortium collaborates with a growing number of other institutions, including Oregon State University, Pacific Institute and New America.
WPS Riverine Flood Risk. This link will take you to a submenu where you can select Riverine Flood Risk, Interannual Variability, Seasonal Variability, etc.