Accession Number : ADA619580


Title :   Environmental Assessment: Conestoga Reservoir Maintenance and Aquatic Habitat Rehabilitation Project Lancaster County, Nebraska


Corporate Author : CORPS OF ENGINEERS OMAHA NE


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a619580.pdf


Report Date : Jun 2014


Pagination or Media Count : 71


Abstract : The U.S. Army Corps of Engineers (USACE), Northwest Division, Omaha District has prepared this Environmental Assessment (EA) to evaluate the potential impacts of Conestoga Reservoir Maintenance and Rehabilitation Project. This EA has been prepared in accordance with the National Environmental Policy Act of 1969 and the Council of Environmental Quality s Regulations (40 CFR 1500-1508), as reflected in the USACE Engineering Regulation, ER 200-2- 2. This EA provides sufficient information about the potential adverse and beneficial environmental effects to allow the USACE, Omaha District Commander to make an informed decision on the appropriateness of an Environmental Impact Statement (EIS) or a Finding of No Significant Impact (FONSI). The finding of the EA determines whether an EIS is required and if no indication of significant impacts is likely, then the agency can release a FONSI completing the NEPA process. This EA also serves as a Biological Assessment (BA) for purposes of Endangered Species Act (ESA) compliance. The Nebraska Game and Parks Commission (NGPC) is planning a maintenance and aquatic habitat rehabilitation project at Conestoga Reservoir, Dam Site 12, (Figure 1-1) to improve water quality, reduce sedimentation and shoreline erosion, and restore aquatic habitat. The proposed rehabilitation measures include: 1) Modification of the reservoir outlet works to facilitate water level management 2) Sediment reshaping and removal to increase reservoir depth and depth-diversity, and increase the life span of the reservoir 3) Shoreline re-grading and construction of in-lake structures to restore and protect reservoir shoreline and create aquatic habitat 4) Construction of small upstream water quality sediment traps 5) Fish population renovation and restocking with desirable fish species Construction of these measures would require a drawdown of the reservoir, which will be maintained throughout the construction phase.


Descriptors :   *ENVIRONMENTAL ASSESSMENT , *HABITATS , *MAINTENANCE , *RESERVOIRS , AIR QUALITY , CONSTRUCTION , CONTROL , CULTURAL RESOURCES , ENDANGERED SPECIES , FISHES , LAND USE , NATURAL RESOURCES , NOISE , POLICIES , REHABILITATION , SEDIMENTS , WATER QUALITY


Subject Categories : Ecology
      Civil Engineering
      Water Pollution and Control
      Environmental Health and Safety


Distribution Statement : APPROVED FOR PUBLIC RELEASE