The capture, storage, and beneficial release of water.
The Watershed Manager’s Mantra
To achieve the watershed manager’s goal of capturing, storing, and releasing water in a safe and beneficial way, he must:
- Maintain vegetation on the site sufficient for absorbing the energy of precipitation (so raindrops hit leaves and dissipate their energy – raindrops splatter soil, but they also plug pore spaces, which lowers infiltration, and increases runoff, which means an increase in erosive potential.). *Enhances infiltration
- (organic soil has higher infiltration) *Vegetation delays movement of water toward and into drainage pathways. 1in rainfal on 1ac exerts 900ft-tons of energy.
- Increasing velocity increases the capacity of water to do erosive work.
- A slower raindrop has much more time to infiltrate.
- The more water that plants absorb, the less water to run over the surface. Less surface water equals less erosion.
- Maintain minimal drainage density. The higher the drainage density, the better the drainage (more risk of flash flooding, water leaves the system quicker). Achieve highest possible sinuosity.
- Optimize temporary water storage.