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f J along major drainageways within the District boundaries. Several design projects were initiated this past year. Some of the more interesting design projects include Littles Creek in the City of Drop structure and pedestrian brid~c ~lcross Cherrv Crt'ck in Arapahoe County. . Littleton and Arapahoe County, Willow Creek 1D Arapahoe County, Westerly Creek at Exposition Park in the City of Aurora, Niver Creek Tributary L in the City of Thornton and Marston Lake North at Bear Creek Park in the City of Denver. The update to the District's "Storm Sewer Pipe Materials Techuical . Memorandum" is nearing completion. Copies of the updated manual should be available in early 1998. Re-Greening Efforts Along the Platte by Ken A MacKenzie, Fngineering bmpector South Platte 10.... Program The last phase of a typical restoration project is tbe revegetation of the disturbed area. Three factors greatly influence the success of this effort: . The revegetation consultant's expertise in site review, soil analysis and planting strategy; . The contractor's care in seeding, planting, and maintaining the site throughout the first critical season' and ' . The cooperation of natore in providing adequate moisture. For the most part, all three fuctors came together in 1997 for a year of very successful project revegetation. One such success was the revegetation project upstream of 88th Av:. The east bank from 78th Ave. to 88 Ave. was the site of an early 1990's flood control project constructed in partnership with tbe City of Thornton. The previous revegetation efforts for most of this project were only marginally successful, and in 1997 we relomed to the site in an attempt to establish a more diverse and better vegetative cover. Witb MDG, Inc. as tbe revegetation consultant, and Western States Reclamation as the contractor, we bad great success in re- establishing native grasses, sandbar willows, rabbitbrush, and cottonwoods along this bank. A large effort was also put into the establishment of wildflower beds, however, the success of this effort may not be known for 3-4 years. Other success stories include the west bank restoration project at 160th Ave., and the Rogers C<Klp project on the west bank at 168th Ave. (Baseline Rd.). We enjoyed tremendous first year success at both locations with the sandbar willow stakings, and the native grasslwildflower mix. Also, at these locations we tried an experimental treelshrub planting techuique of grouping riparian species (plains cottonwoods, narrow leaf cottonwoods bawthorns, etc.) and dryland species ' East bank of the South PlaUe River upstream from 881h Ave. hefore and after 1997 revegetation. ~ 5 Tree & strub planting ncar C470. (sage, rabbitbrush, chokecherries, etc.) into planting "pods". This method proved very successful with tbe riparian species, and moderately successful with the dryland species. As a follow-up to the 1996 sauitary sewer buttressing project downstream of C-470 in Littleton, we worked with the South Suburban Parks and Recreation District to plant over 100 native trees and shrubs along the west bank in the immediate area of that project, which is inside South Platte Park. This was a barren area that now has the beginuings of a new riparian cover in this beautiful stretch of the river. Check us on the Web We will be putting this issue of Flood Hazard News on our Web page at www.udfcd.org. The advantage there is that we will have additional pictures, and most will be in color. Also available on our site is the District's Activity Summary, a status of current construction projects and a list of futore projects.