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<br />~ <br />-WI <br /> <br />KE1'( PROJECTS <br /> <br />_.........____1_ <br /> <br />__....._ __111'1 <br /> <br />HERON LAKE WA TERSHED DISTRICT- FLOOD RECONNAISSANCE STUDY <br /> <br />HDR was retained by the Heron Lake Watershed District to assess the feasibility of 25 previously <br />identified sites for use as the flood water storage impoundments. HDR developed a screening <br />approach used to evaluate and rank each of the potential locations. Screening criteria were developed <br />using location, design, hydrologic and environmental considerations. Information was summarized <br />in a comprehensive report and a $650,000 grant application which was submitted to the Minnesota, <br />legislature in a bonding bill. A unique facet of the report is its recommendatJion of a "systems" <br />approach to flood control. This concept incorporates the assumption that 8 or 9 inexpensive smaU <br />projects can have an equivalent impact on the minimization of peak flows in a watershed as a single <br />large and expensive impoundment. Implementation of this project will provide viable wetland <br />communities which are designed to provide both flood control and habitat enhancement value. HDH <br />and the watershed district recognize that such an approach, when accompanied by land treatment <br />can be cost effective and yield additional environmental benefits. Because of the district's difficulty <br />in obtaining permits for larger projects in the past, this approach may provide the only permittable <br />solution to the district's flooding problems. Heron Lake Phosphorus Reduction SludyHDR has been <br />retained by the Heron Lake Watershed District (HL WD) to identi~v and evaluate alternatives for the: <br />reduction of Okabena Creek phosphorus loadings which are creating a severe problem in Heron <br />Lake. A large portion of the phosphorus loadings art: currently point source discharges. The study <br />will involve working with the city of Worthington and industrial point source dischargers in <br />developing cost effect alternatives for reducing phosphorus loading into the creek. This will involve <br />the evaluation of plant discharge reductions, pollutant trading credilts and wetland treatment systems. <br /> <br />Date Completed: December 1997 <br /> <br />Client: Heron Lake Watershed District <br /> <br />Gross Fees: $33,454 <br /> <br />Location: Heron Lake, MN <br /> <br />GRAND FORKS CITY HALL - FLOOD El.EVA170N <br /> <br />HDR provided an independent review of flood problems and solutions which was considered by <br />other agencies in providing flood control protection to Grand Forks, North Dakota and vicinity. The: <br />project consisted of reviewing exiting studies condu(;ted by the Corps of Engineers, FEMA, SCS, <br />and other State and local agencies; preparation of a report on the findings; and presentation of <br />conclusions and recommendations to the City for consideration in pursuing flood control protection. <br />Alternatives reviewed included dams, channel improvement and modification, levees, levees and <br />channel improvements, relocations, evacuation, flood insurance programs, and diversion around the' <br />City of Grand Forks. <br /> <br />Date Completed: June 1997 <br /> <br />Client: City of Grand Forks <br /> <br />Net Fees: $12,408 <br /> <br />Location: Grand Forks, NO <br /> <br />1999 Flood Documentatkln Report <br />HDR Engineering, !nc. <br /> <br />{tCOkl- <br />,-",~~~,'. <br />~(1t:;1 P! <br />.b'.8.~)",,~1 <br />\.'~....'ir/..' <br />'!.~h~Y <br />