WSP02645 - Laserfiche WebLink

Home Browse Search

I I I I I I I I I I I I I I I I I I I 000993 scope of services was expanded to include an analysis of the impact. This work was performed by Bishop, Brogden, and Rumph, Inc. under sub-contract to the TAC and coordinated by the CONSULTANT. A summary of the results of this analysis are also included in this report. C. Basic Data Considerable information was provided to the CONSULTANT by Greiner Engineering Sciences, Inc. (technical coordinator for the TAC). A list of the information is presented in Appendix-A. In addition, as part of the analysis of the river morphology, the CONSULTANT obtained aerial photographs of the project area on the following dates October 15. 1964; August 10, 1971; July 5, 1978; and October 1983. Samples from the river bed and banks were taken and gradation analysis performed (see Chapter III). .Information obtained from the United States Geological Survey (USGS) included summary of discharges, annual peak flow, monthly flows,and stage discharge tabulations for the Melvin Streamgage (Station 06712500). The mapping provided for the project consisted of a composite of I-foot and 2-foot contour interval mapping listed below: Sections 0 to 4,440: Northway - Gestalt, Topographic Mapping Viehmann, Martin Site l' = 100', 2-foot contour intervals, 1981. Sections 4.840 to 11,020: Analytical Surveys, Inc., Topographic Mapping, River Run Project, Digitized Sections Only, 1984. Sections 11,600 to 17,300: Northway - Gestalt, Topographic Mapping Ashbrook Site, 1" = 100', 2-foot contour interval s, 1981, and U.S. Army Corps of Engineers and, Cherry Creek Floodplain Information Report Mapping, 1" = 200' contour intervals. flown April 1975. The section numbers refer to the cross sections used for the hydrau1 ic analysis (see Figure-5). -3-