Floodplain / Drainage

• Eagle River Estates, Filing IV, Gypsum, Colorado
  HEC-2 modeling of floodplain and floodway for 4,500 feet of the Eagle River through this 89 lot residential subdivision.

• Gilstrap Enterprises Subdivision, Glenwood Springs, Colorado
  HEC-2 modeling of floodplain and floodway for 2,630 feet of the Colorado River through this 12 lot commercial subdivision. In the early stages, HEC-2 modeling of the Mitchell Creek floodplain was performed. The analysis included 200 feet of Mitchell Creek to protest FEMA preliminary mapping determination. FEMA's determination was changed prior to map publication.

• Cotton Ranch P.U.D., Gypsum, Colorado
  HEC-2 modeling of floodplain and floodway for 6,600 feet of Gypsum Creek through this large golf course/residential development.

• Roaring Fork River Lodges, Basalt, Colorado
  Verification of floodplain and floodway for 2,500 feet of the Roaring Fork River in the Town of Basalt, after flooding and structural modifications to the channel.

• City Market, Vail, Colorado
  Detailed drainage study for new building incorporating underground parking and retail, with a walk out level residential development. Included sand filter treatment of runoff, underground detention, and full hydraulic grade line calculations for affected storm sewers.

• Funland, Carbondale, Colorado
  HEC-2 modeling of floodplain and floodway for several hundred feet of Cattle Creek to determine what affect the filling associated with the proposed development would have on the floodplain and floodway previously mapped by FEMA.

• Cerise and Arnold Ditch Siphon/Harris and Reed Ditch Re-alignment
  Approximately 4,400 lineal feet of irrigation ditch realignment through two residential subdivisions, including design of all appurtenances and a section of inverted siphon.

• 3-Mile Creek Dam and Siphon
  90-acre foot earthen dam and pipeline for trans-basin diversion near Glenwood Springs, Colorado.

• Salvation Ditch Siphon, Woody Creek, Colorado
  Design and construction engineering for 3/4 mile long, 24 inch diameter, inverted siphon across the Woody Creek valley to eliminate the maintenance of five miles of open ditch through unstable areas.

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