Ohio Watersheds Are Crucial to
We all live in a watershed.
Residential areas, farms, forests, small towns, big cities …They’re all part of a massive watershed network. Watersheds cross municipal, county, state and even international borders.
They come in all shapes and sizes, encompassing millions of square miles or just a few acres. And like creeks that drain into rivers, small watersheds are almost always part of a larger watershed.
For instance, Ohio’s 23 major watersheds consist of 254 principal streams and rivers. But they all drain into either Lake Erie or the Ohio River. (See “Ohio’s Two Primary Watersheds,” below.)
Our landscape and all its activities interconnect with streams, lakes and rivers through their watersheds. Naturally varying lake levels, water movement to and from groundwater, and amount of stream flow influences them as well. The health of our waterways is largely determined by these dynamics between the land and the water.
Becoming Watershed Wise
Watersheds must be protected if they are to sustain life. When human activities alter the natural function of the watershed, residents can be adversely affected by frequent flooding and routine periods of drought.
The three leading causes of polluted waterways are:
- Bacteria (such as E. coli), and
- Excess nutrients (such as nitrogen- and phosphate-based fertilizers).
Watershed-wise practices help create a balance and allow nature to work in our favor. When properly employed, residential landscapes can function as healthy mini-watersheds. The Green Gardens Group (G3) provides training and certification for its Watershed Approach to landscaping. This approach includes four key elements:
- Build Healthy Soil
- Capture Rainwater
- Select Native, Climate-Appropriate Plants
- Use Highly Efficient Irrigation
Smart irrigation technology (smart controllers, rain and soil-moisture sensors, and pressure regulators) is a key component of this approach and ensures optimal irrigation system performance.
As an irrigation and landscape professional, are you practicing watershed-wise principles, or are you contributing to the problem? Here are a few tips:
- Promote smart irrigation controllers and other technology with your customers, to ensure that runoff is reduced or even eliminated.
- Utilize matched precipitation rate (MPR) nozzles.
- Suggest that your customers create hydrozones (groups of plants with similar water needs) to conserve water.
- Offer your customers natural alternatives to nitrogen- or phosphate-based fertilizers? And suggest integrated pest management instead of pesticides.
- Make sure that roof runoff is directed onto a grassy area, not a sanitary or storm sewer system.
- Suggest porous surfaces for landscaping (such as flagstone, gravel or interlocking pavers), rather than impervious surfaces like concrete.
- Consider installing irrigation systems that draw from rainwater or gray water, whenever possible.
- Remind your customers that irrigation system management is critical! Systems must be actively and constantly managed in order to be watershed wise.
We all affect the watershed, one way or another. Whether our individual influence is positive or negative is up to us.