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I I I I I I I I I I I I I I I I I I I December 2000 -4- 003-2176 Station 15+00: Landside IV:3.5H Station 75+00: Landside IV:2H Riverside 1 V: 3H Riverside 1 V:2.5H Station 20+00: Landside IV:3.5H Station 80+00: Landside IV:4H Riverside 1 V:3H Riverside 1 V:4H Station 25 + 00: Landside IV:3.5H Station 85+00: Landside IV:4H Riverside 1 V: 3H Riverside IV:3H Station 30+00: Landside IV:5H Station 90+00: Landside IV:3H Riverside IV:3.5H Riverside 1 V: 3H Station 35+00: Landside IV:3H Station 95+00: Landside IV:3H Riverside IV :2.5H Riverside IV:4.5H Station 40+00: Landside IV:3H Station 100+00: Landside 1 V:6.5H Riverside 1 V: 3H Riverside 1 V:7H Station 45 +00: Landside IV:3H Station 104+00: Landside IV:7H Riverside 1 V:2.5H Riverside IV:6H Station 50+00: Landside IV:3.5H Station 105+00: Landside IV:9H Riverside 1 V: 3H Riverside 1 V:7H Station 55+00: Landside IV:2.5H Riverside IV:2H e. Levee Length: 10,700 feet f. Type of Embankment Materials: Sand and silt g. Type 6"fFoundation Materials: Sand and silt h. Streambank Materials: Sand, silt, and soil cement i. Erosion Protection: Widened channel and soil cement lining. j. Interior Drainage: Ditches and culverts with slide gate closures k. Riverside Berm Width: 100 to 1900 feet I. Landward Underseepage Control Berms: No Berms, some irrigation ditches along the lands ide toe. 3. Hydrologic and Hydraunc a. Estimated Level of Protection: The existing levee provides 10-year protection with approximately 8-feet of freeboard in all areas of the levee. b. Gage Data: Due to the lack of gage information on Kiowa Creek, a correlation was made to the FEMA flood insurance maps and Colorado Water Conservation Board data. c. Historic Flood Levels: There was no data available on historic flood levels. Kiowa Creek flows only intermittently in direct response to high runoff events from the contributing basin. 4. Economic a. Total Acres Protected: 3520 (approximate) CIlJNZIPIWIGGINS\2176RIA.DOC Golder Associates