Matrix performed work for the Colorado Water Conservation Board (CWCB) to help the communities and floodplain administrators involved with the Roaring Fork and Fryingpan rivers address inherent flood hazards and channel instability. The project won an Honor Award for Outstanding Achievement by the Colorado Association of Stormwater and Floodplain Managers in 1999 and the National Award for Excellence from the Association of State Floodplain Managers in 2000. The project utilized Geographic Information Systems (GIS) to study over 1,450 sq mi of watershed and 66 river miles. The GIS approach enabled the planning team to study areas of instability by overlaying aerial maps dating to the 1940s in a cost effective manner.

Resource mapping also enabled Matrix to address multiple objectives for water usage within the basin including fishing, rafting, irrigation, and water quality. A significant finding of the study (evolving from the creation of digital overlays of regulated floodplain boundaries) was the discovery that lateral migration of the riverbed had placed a number of residences and businesses in high hazard flood areas. Matrix subsequently worked with the CWCB and local communities to master plan channel improvements and to adopt a no-net rise encroachment restriction for further development.

Services included:

  • Watershed Planning
  • Infrastructure Assessment and  Master Planning
  • Channel River Restoration and Channel Design
  • Channel Stability Analysis
  • Water Rights Analysis
  • Water Quality Analysis
  • Public Involvement