What does it mean to make your home green for stormwater? Green stormwater practices around your home use plants, soils, and other elements to manage water quality and mimic the natural water cycle. Green stormwater practices retain, detain, filter, harvest, and infiltrate stormwater runoff to create healthier urban environments.

Incorporating green infrastructure provides many benefits such as improving water quality by removing pollutants, habitat preservation for native plants and animals, decreasing urbanization stream impacts, and overall enhancement of neighborhood aesthetics. The following is a list of management practices that landowners can incorporate on their own property to help control and keep stormwater clean. (Sources: Penn State Extension, United States Environmental Protection Agency)

• Downspout Disconnect/Redirect - If your downspouts are directed onto a paved or concrete surface or are directly connected to the storm drain system, look for opportunities to redirect them to lawn and garden areas if community ordinances allow. Just be sure that all downspouts are directed away from foundations to avoid basement flooding.
• Rain Barrels - Rain barrels capture and hold water until it can be used or slowly released into planted areas. For rain barrels to be effective at controlling stormwater, it is important to have a plan for using the water before installing one.
• Planting A Stream Buffer - Planting water loving trees, shrubs and/or other native plants is a great way to reduce stormwater runoff. If you have a stream on your property, planting along the stream will help prevent the stream from eroding away your property. The more plants the better! At the very least don't mow your lawn directly up to the edge of the streambank.
• Meadows Plantings or Turf Alternatives - If trees aren't an option on your property, adding other types of plants is a good substitute. Any areas where lawn can be replaced with native ornamental grasses, flowers, and/or shrubs will have a positive impact on controlling stormwater on your property. Whether large or small, these purposefully planted areas will increase the ability of the land to absorb water. Meadow/turf alternative areas can be a great way to reduce the amount of time you spend mowing the grass and can be placed in the areas that are the most difficult to mow.
• Pervious Pavers - Pervious pavers can look very similar to a traditional brick or stone patio, sidewalk, or driveway. The difference is that they are installed with a thick stone base that provides space for water to be stored until it soaks into the ground. They are great for converting hard surfaces that usually make a lot of stormwater runoff, into a surface that absorbs, manages, and reduces that runoff. If you're interested in this, you should probably contact a professional landscaper.
• Rain Gardens - One of the best options for managing stormwater on your property is to install a rain garden. A rain garden is a depressed area in the landscape that collects rainwater from a roof, driveway or street and allows it to soak into the ground. Planted with grasses and flowering perennials, rain gardens can be a cost effective and beautiful way to reduce runoff from your property. Rain gardens can also help filter out pollutants in runoff and provide food and shelter for butterflies, songbirds and other wildlife.

Many of these projects you can tackle on your own. To learn how to build a rain garden on your own property, Warren County SWCD will be hosting the Master Rain Gardener program which is a 6 day course that takes place over 7 weeks. During the course, students are guided through the rain garden design and installation process by experienced regional professionals. The course costs $50. Warren County residents are free by calling 513-695-1337 before registering and students are eligible for 50% discount by calling 513-772-7645. If you have complicated stormwater issues on your property, consider getting help from an engineer, Soil and Water District professional, OSU Extension professional, and/or landscape professional. Also, be sure to check local ordinances to ensure that different management practices are allowed in your area.

For more information regarding green infrastructure for the home, Warren County Soil and Water Conservation District programs and/or technical assistance on water or soil questions, visit http://warrenswcd.com or call, 513-695-1337. 

The inclusion of cover crops in a cash crop rotation can have huge benefits to soil fertility and productivity, while at the same time protecting waterways from excess nutrient runoff.
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Nitrogen Production
Cover crops, specifically legumes, can create plant available nitrogen (NH3) from nitrogen gas (N2) which is readily found in the Earth’s atmosphere. Legumes create nitrogen through a symbiotic relationship with the bacteria, Rhizobium. Rhizobia infects the legumes root hairs; the bacteria receive its required sugars and vital nutrients while the host legume receives the excess plant available nitrogen. It is estimated that one-half of the NH3 created becomes available to the subsequently planted crop, approximately 1-2 months after the legume has been terminated.

Nutrient Scavenging
A common concern in modern agriculture both by farmers and water quality experts is the amount of applied nutrients that are left on the field after cash crops have been harvested. In a typical cash crop rotation, crop ground can lay fallow for several months giving nutrients the correct conditions to rapidly exit the field. In the scenario where a cover crop is established rapidly after or even before harvest, these leftover nutrients  in the soil are taken up by the cover crop. Nutrients are safely stored until the cover crop is terminated and the nutrients can again be made available for a cash crop or remain as organic matter. This both reduces the amount of excess nutrients entering waterways, but also keeps farmer’s dollars (spent on fertilizer) in the field where it is an asset for future cash crops.

Soil Builder – Compaction Breaker
Cover crops also stand to improve soil quality and composition. Most notably the life cycle of a cover crop dictates that it is not harvested at termination. In this scenario the organic matter from the terminated crop all remains in the field and over time will increase the amount of organic matter of the top soil. Organic matter is an important aspect of soil health; it directly correlates to fertility in that a nominal amount of organic matter will: provide food for the soil’s microbial ecosystem, improve water infiltration and holding capacity, and enhance its ability to hold onto and supply nutrients to growing crops.

Specific cover crops can also be a vital tool against compaction. The ever-increasing size of agricultural machinery is cause for concern regarding the compaction of productive soils. Cover crops which have deep roots can penetrate deep into the ground, improving soil permeability, which in turn increases water infiltration and aeration. Additionally, specific cover crops which have large taproots can break through hard pans and compacted layers of soil. This creates macropores for future cash crop root growth.

Erosion Prevention
Perhaps the most well-known benefit of cover cropping is the claim that planting a cover crop reduces erosion. The crop is physically “covering” the soil and shields it from both wind and water erosion. A 6mm raindrop is traveling up to 20 mph when it impacts the surface. The drops impact on the soil displaces soil particles and starts the process of erosion. Shielding bare soil with a cover crop keeps soil in place and retains the structure of the topsoil. Live roots along waterways and areas that carry water during heavy rains also help keep soil aggregates stationary during wet season rains.

Additional Benefits
Cover crops can provide weed suppression benefits. This is typically done by out competing or overshading growing weeds. Additionally, some species of cover crops have the ability to release substances and chemically inhibit the growth of surrounding plants (i.e. cereal rye, sunflowers and buckwheat).  Cover crops if managed properly and planned accordingly can also provide grazing and forage opportunities to growers who also manage herds of livestock.
 
Program Opportunity:
To learn more about the benefits and types of cover crops for southwest Ohio, please join the Warren County Soil and Water Conservation District for the annual Agriculture Conservation Breakfast on February 24th from 8:30AM-11AM at the Countryside YMCA Events Center, 1699 Deerfield Road, Lebanon. This program is free, but registration is required. To register, please go to warren.swcd.com or call, 513-695-1337.

Additional Resources:
Rain or Shine (https://open.library.okstate.edu/rainorshine/chapter/5-3-raindrop-impact/)
Cover Crop Farmers of Southwest Ohio (https://clermontswcd.org/wp-content/uploads/sites/23/2017/12/covercropfarmers.pdf)
Cover Crops for Southwest Ohio (https://fairfieldswcd.org/wp-content/uploads/2017/02/SWOhioCover-CropBooklet.pdf)
Ohio Cover Crops (https://cfaes.osu.edu/features/ohio-cover-crops)