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TABLE 1 - FLOODING SOURCES STUDIED BY DETAILED METHODS - continued Stream Stream Miles Baldwin Gulch Sulphur Gulch Tallman Gulch Bayou Gulch South Platte River Horse Creek West Creek 3.5 5.0 3.0 4.0 1.5 0.5 1.5 For the July 4, 1989, FIS revision, the Sulphur Gulch and Tallman Gulch were revised within the Town of Parker. In addition, the Letter of Map Amendment (LaMA) was incorporated. a. Sulphur Gulch Sulphur Gulch was revised to reflect the effects of the new State Highway 83 (Parker Road) bridge across Sulphur Gulch and overlot grading for property identified as Parker Central Area C-12 property. As a result of these changes, the floodplain and floodway were redefined for a reach of Sulphur Gulch from Pikes Peak Road to a point approximately 1,200 feet downstream. The revised hydraulic analysis for this reach was developed by Greiner Engineering Sciences, Inc., Denver Colorado, and presented in their technical report entitled "Sulphur Gulch Letter of Map Revision, Parker Central Area C-12, Parker Colorado," date August 1987. b. Tallman Gulch New approximate Zone A flooding was added to Tallman Gulch Tributary form its confluence with Tallman Gulch to a point approximately 2,800 feet upstream. The basis for this revision is a technical report entitled "Flood Hazard Identification Report, Tallman Gulch Tributary 1, Parker, Colorado," prepared by the Department of Natural Resources, CWCB, dated December 1986. This report included the hydrologic and hydraulic analyses for this reach of Tallman Gulch Tributary. c. The LaMA issued on October 12, 1987, for the Saddlebrook Subdivision Filing Number 1 located along Sulphur Gulch was incorporated. For the March 15, 1993, FIS revision, Cherry Creek was revised within the unincorporated areas of Douglas County. Cherry Creek was revised to reflect the effects of the recent urban developments and associated improvements. These improvements consist of the following: 5