Proposed Draft Floodplain Mapping
Following the 2013 flood, the Colorado Water Conservation Board (CWCB) initiated a program to re-map the predicted 1% chance regulatory floodplain (100-year flood zone) of the most affected waterways. The program was named the "Colorado Hazard Mapping Program" or "CHAMP".
The CWCB draft floodplain maps will reflect changes to waterways caused by the 2013 flood and the recovery work since that flood. They'll also utilize more accurate data and advanced technology than was available when the current maps were created. As a result, the CWCB draft maps will be a more accurate representation of the anticipated 1% annual flood elevation and therefore more precisely reflect the flood risk for residents than the existing regulatory floodplain maps.
Town of Lyons Draft Floodplain Maps
Wednesday, Dec. 21 | 5:30 to 7:30 p.m. | Lyons Town Hall Board Room
The Town is currently reviewing the proposed new floodplain maps, within Town limits. The working draft floodplain map, as well as the current (2012) FEMA-adopted map, can be found here.
The Town is hosting a public review session on Lyons Proposed Draft Floodplain Mapping on Wednesday, Dec. 21, from 5:30 to 7:30 p.m., at the Lyons Town Hall Board Room.
Details of the Lyons Proposed Draft Floodplain Mapping Public Review Session:
Date: Wednesday, Dec. 21
Time: 5:30 to 7:30 p.m.
Location: Lyons Town Hall Board Room
Town of Lyons Floodplain Maps >>
Unincorporated Boulder County Draft Floodplain Maps
Boulder County has prepared draft floodplain maps for unincorporated Boulder County. State and county staff held a review session for the proposed draft maps on Dec. 13, which included a presentation and a hands-on map review session.
To review or submit feedback to Boulder County's Unincorporated Draft Floodplain mapping, click here.
More Information on Unincorporated Boulder County Draft Floodplain Maps >>