KEARNEY STORMWATER MANAGEMENT PLAN
It’s nearly July and the gardens are green and full of early summer blossoms – using just rainwater.
Late last week the City of Scottsbluff finally turned the water on the downtown gardens, about three months after lawn watering began around the city. Native and well adapted plants use much less water than traditional turf once established. They’re also drought hardy, provide needed habitat for pollinators and create a distinct sense of place with a plant palate tailored for the Nebraska Panhandle.
Rain gardens capture and infiltrate runoff from roofs, driveways, and other impervious surfaces. Rain gardens not only recharge groundwater supplies, but also clean out pollutants, create pollinator habitat, increase property value, and provide year round visual interest for your home.
Check out this interactive rain garden animation from UNL extension.
· Mapping Out the Garden with Anita Gall , Anita’s Greenscaping*
Date: March 18, 2016 Time: 11:00 AM—Noon
Location: Café de Paris, 15 West 16th Street Phone: 308-633-2529
Garden: Lots 1 & 10, Avenue A between 16th and 17th Streets
· Arbor Day with Amy Seiler, Nebraska Forest Service*
Date: April 15, 2016 Time: 11:00 AM—Noon
Location: Cappuccino & Company, 1703 Broadway Phone: 308-635-9997
Garden: Lots 8 & 16, Avenue A and 17th Street
· Phytoremediation with Leann Sato, Scottsbluff Stormwater Program Specialist*
Date: May 20, 2016 Time: 11:00 AM—Noon
Location: The Emporium Phone: 632-6222
Garden: Lot 3, 18th Street & 1st Avenue and Lot 4, 17th Street & 1st Avenue
· Great Plants Showcase with Bob Henrickson, Nebraska Statewide Arboretum
Date: June 3, 2016 Time: 11:00 AM—Noon
Location: Godfather’s Pizza, 2207 Broadway, Phone: 308-632-3644
Garden: Wellhouse #3, Broadway and 23rd Street
· Beneficial Insect Environments with Jeff Bradshaw, UNL Extension*
Date: July 29 , 2016 Time: 11:00 AM—Noon
Location: Cappuccino & Company, 1703 Broadway Phone: 308-635-9997
Garden: Midwest, PSB, East Overland Entryway (Diverse flowers – new and established)
· Watering a Low-Water Use Landscape with Jim Schild, Associate Director, UNL Extension
Date: August 19, 2016 Time: 11:00 AM—Noon
Location: The Shed, 18 East 16th Street Phone: 635-6555
Garden: Library Bioswale, 1908 3rd Avenue
· Landscaping LID Style with Al Herbel, LEED AP and Lois Herbel, Nebraska Department of Education
Date: September 16, 2016 Time: 11:00 AM—Noon
Location: Runza, 1823 Broadway Phone: 631-0397
Garden: Library Bioswale, 1809 3rd Avenue
· Gardens Through the Lens with Gary Stone, UNL Extension*
Date: October 21, 2016 Time: 11:00 AM—Noon
Location: Sam & Louie’s, 1522 Broadway Phone: 308-633-2345
Garden: Library Bioswale, via West Nebraska Art Center , Lot 12
The following is Part III of a three part series focusing on the City of Scottsbluff’s 319 grant projects. These projects are designed to reduce impervious cover in parking lots, filtering and infiltrating stormwater runoff. This article will go over project successes. For an overview of the projects, see Part I. For project challenges and lessons learned, see Part II.
In the last article, we went over the challenges of landscaping a hot, harsh urban environment. Now that we have gone over the difficulties of these projects, we are going to outline some of the practices we used that worked well. The following is a list of some of the techniques that were effective and that we will be using in the future:
- Plant Selection- Thanks to the help of the Nebraska Forest Service and the Nebraska Statewide Arboretum, we were able to use a very carefully chosen plant list. This plant list included several tried and true plants for our area, such as catmint, yarrow, jupiter’s beard, butterfly milkweed, and asters, as well as some lesser-known selections, such as thelosperma and plumbago. We will be monitoring these landscapes to see which of these plants do well over time, helping to expand our palette of plants we know to be successful in this area.
- Sedges- While this also refers to plant selection, the unique functionality of our sedges merits them their own bullet point. Because the projects are designed to capture stormwater, and because the soils were in such poor condition when we started our projects, we had several areas that were poorly drained. These were the areas where we planted sedges, some of them which were literally planted in standing water. These sedges have thrived, looking very attractive while serving the very important function of cleaning and filtering stormwater before it reaches the storm drain or is infiltrated into the ground. There are very few plants that do well when exposed to extended periods of standing water; we have had great success with using sedges in these difficult areas.
- Beehive Storm Grate- The previous storm drain was a typical rectangle grate that was flush with the ground. We talked about some of the challenges of mulch in our previous article; one of the other challenges is that it can plug a storm drain. The storm drain we chose for the overflow of our retention area, shown below, is designed to keep from plugging when the water gets deeper and mulch starts floating. After experiencing a few strong thunderstorms, it appears that this design has been very effective at keeping the storm drain open to receive overflowing stormwater runoff.
- Strategic Placement of Hardscape- We allowed several areas throughout the landscape for people to pass through as they were leaving their vehicles. This seems to have cut down on the amount of foot traffic we receive in the landscape itself. Additionally, in an area that was constantly being driven over, we strategically placed a boulder. This not only has aesthetic value, it has completely stopped vehicles from driving over this part of the landscape.
At this time, those are the most noticeable successes that we have seen. We are hoping that over time, using large landscape beds with adequate soil rooting volume for trees will help the trees to be more successful long-term; however, it will be several years before we know for sure if it is a success. We are also hoping to turn off the drip irrigation systems in the future. During their first summer, though, we will be leaving the irrigation on to help the plants establish their root systems. We may have to continue irrigating during extended dry periods. We will also be observing our plants over time to see how they do- watch for future articles outlining specific plant selections that have done well. All in all, perhaps the greatest success has been being able to remove over 9,500 square feet of concrete from our parking lots and replace it with a beautiful, functional landscape that will have great environmental benefits for years to come.
The following is Part I of a three part series focusing on the City of Scottsbluff’s 319 grant projects. These projects are designed to reduce impervious cover in parking lots, filtering and infiltrating stormwater runoff.
In 2014, the City of Scottsbluff was awarded $40,000 through the Nebraska Department of Environmental Quality’s 319 grant program. The purpose of the grant was to allow the City to install demonstration projects that would promote better stormwater management throughout the City. Through this project, the City was able to remove over 9,600 square feet of concrete throughout several parking lots and replace it with landscaping. In addition, some of the remaining concrete in the parking lots were sloped so as to allow runoff from the concrete to be captured by the landscaped areas. Continue reading Greening Up The Urban Environment- Part I
The City of Scottsbluff, working with the Nebraska Forest Service and Nebraska Statewide Arboretum, has recently completed a project that will help reduce stormwater runoff and pollution. We started with a parking lot that had over 16,000 square feet of impervious surface and no landscaping. We broke out over 4,000 square feet of concrete and replaced it will trees, shrubs, grasses, and perennials. Not only did we reduce the impervious surface area of the parking lot by about 1/4, we also designed the project so that runoff from the impervious areas that were left would run into the landscaped areas, where much of it can be filtered into the soil and utilized by the plants. Keep reading for a step by step explanation of what went into this project. Continue reading Sustainable Landscaping Reduces Stormwater Pollution