This website contains information relating to the long-term recovery of the High Park and Woodland Heights fire areas. Click on the category of information below to view related documents and links.
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Big R Bridge in Greeley is offering a 10% discount off list price on corrugated metal pipes (CMP) to be used for drainage culverts in the High Park Fire burn area. Contact Big R for more information on specific prices and available sizes. Freight costs are not included in this discount; pick-up is possible in Greeley.
Big R Bridge
19060 Weld County Road 66, Greeley, CO 80631
1-888-339-1684 or (970) 356-9600.
Wildfires can greatly increase the risk of flooding, mudflows and landslides in burn areas and drainage basins impacted by fire. For the next number of years, substantially increased flood peaks, flow volumes, sediment transport and stream channel destabilization are expected even in minor rain events and outside expected drainage paths. It is important for property owners to understand the change in condition, and take action if necessary.
This report was completed in October 2012 and developed estimates of peak discharges that could be produced from different rainstorm events within the burn area drainage basins. These changes in discharge are an indication of increased flood hazard potential. The report is technical in nature, but results show that runoff can be 4-10 times greater due to the High Park Fire. Appendix A includes maps of many of the individual drainage basins and a chart for each basin comparing pre- and post- fire flowrates at various locations in each basin.
Appendix A - Predicted High Park Flood Response for individual Basins October 2012 (size: about 5.5 MB each)
Poster: increased Flood Potential of Streams Draining the High Park Fire September 2012 (size: 3.3 MB)
The NRCS completed detailed reports which have identified areas that may benefit from additional mitigation efforts. The report includes recommendations and considerations specific to private property within the burn area. This information is useful to property owners in order to plan for the placement of sandbags, blocks and other flood mitigation recommendations.
This report, completed in July 2012 was a preliminary assessment of the debris flow hazards within the drainage network within the burn area. The report provides estimates of the percent probability and volume of debris flow for a 10-year storm event generating 1.5 inches of rain in a one-hour time period. The results indicate a potential for substantial debris-flow impacts on structures, roads, bridges, and culverts located within, and immediately downstream, from the burned area. Results are summarized in Table 1 on page 8 of the report and are graphically shown on page 10 and 11. (Note: this report analyzes debris flow within 3 years after a fire and does not evaluate the hazards from flash floods without debris flow, which may remain for many years after a fire.)
This is an interagency report completed just after the fire that summarizes watershed information, areas of concern, values at risk and proposed immediate treatment measures.
Larimer County contracted with a local engineering firm to prepare inundation mapping for Rist Creek and the Mill Creek/Bellvue areas. This mapping was prepared using high quality topography obtained after the fire and represents a qualitative assessment of what the flood conditions could look like during a 2-year, 10-year, 25-year or 100-year post-fire storm event.
The NRCS completed a detailed study specific to Falls Gulch which identified the post-fire estimated water surface elevation along the reach of the gulch during different magnitudes of storms. The report includes detailed cross-sections along the reach that graphically show the expected elevation of the stormwater compared to the location of existing structures. This information is useful to property owners in order to plan for the placement of any new structures and help plan mitigation efforts to protect properties and existing structures. It is recommended that all new structures are placed such that the lowest opening is set above the 'energy grade' (or E.G.) elevation in the tables.
Suzanne Bassinger, Recovery Manager, firstname.lastname@example.org, (970) 498-7148