- View Home Page for ...
- Colorado Hazard Mapping & Risk MAP Portal
- CO Hazard Mapping
- CO Risk MAP
- Delta Countywide Risk MAP
- Bent Countywide Risk MAP
- Larimer County Big Thompson River PMR
- Montrose County Risk Map Study Update
- Garfield Countywide Risk MAP
- Sedgwick Countywide Risk MAP
- CO119A PMR
- Chaffee Countywide Risk MAP
- Elbert Countywide Risk MAP
- San Miguel Countywide BLE Update
- Lincoln Countywide Risk MAP
- Lake Countywide Risk MAP
- Southwest Colorado Multi-County Risk Map - Dolores
- Summit Countywide Risk MAP
- Southwestern Colorado Multi-County Risk MAP - Archuleta
- San Miguel Countywide Risk MAP
- US 34 PMR
- Grand County Risk Map Study Update
- Teller Countywide Risk MAP
- Weld County Risk Map Study Update
- El Paso Countywide Risk MAP
- Crowley Countywide BLE Update
- Alamosa County Risk Map Study Update
- Prowers Risk MAP Flood Study Update
- Prowers Levee Pre-Analysis
- Gunnison Countywide Risk MAP
- Pueblo Countywide Risk MAP
- Phillips Countywide Risk MAP
- Morgan County Risk MAP
- Custer Countywide Risk MAP
- Adams Risk MAP Flood Study Update
- Otero Countywide Risk MAP
- CO7 PMR
- Kiowa Countywide BLE Update
- Boulder County PMR
- Gunnison County PMR
- Moffat Countywide Risk MAP
- Southwest Colorado Multi-County Risk Map - San Juan
- Gilpin Countywide Risk MAP
- Mesa Countywide Risk MAP
- Logan County and Communities Risk Map Study
- Fremont Countywide Risk MAP
- Hinsdale Countywide Study
- Costilla Countywide Risk MAP
- Arapahoe Risk MAP Study Update
- Southwest Colorado Multi-County Risk Map - La Plata
- Huerfano County Phase 2 Risk MAP
- Las Animas Risk MAP Flood Study Update
- Eagle County PMR
- Baca County Risk Map Study Update
- Saguache County Risk MAP
- Southwest Colorado Multi-County Risk Map - Montezuma
- Park Countywide Risk MAP
- Phillips County/City of Holyoke FIRM and FIS Update
- Mineral Countywide Risk MAP
- Ouray Countywide BLE Update
- Special Projects
Summer 2016
Winter 2017
-
1st Hydraulics & Floodplain Mapping FEMA Review
-
Flood Risk Review (Weld County)
-
Complete Y2 Survey & Hydrology
Summer 2017
Winter 2018
-
South Platte Flood Risk Review
-
South Platte FEMA Review
-
St. Vrain Regulatory Update & Due Process
Field Reconnaissance & Survey
Survey data is used to determine precise elevations and dimensions of portions of the floodplain and to verify and refine topographic data. The project team conducted detailed field reconnaissance and surveyed the specific study area.
Topographic Data Development
Topographic data is data used to model the surface of the earth. The study team leveraged existing topography (see lidar availability on the full map page) and collected approximately 7 square miles of topographic data in Loveland, CO.
Hydrology
Hydrology is used to determine the amount of water flow anticipated in each stream. The study team calculated new peak flood discharges for the 10%, 4%, 2%, 1%, '1% plus' and 0.2% annual chance events for 73 miles of study in the Big Thompson Watershed and 58 miles in the St. Vrain watershed.
Hydraulics
Hydraulic models are created to calculate the depth of water anticipated during flood events. Hydrologic results are used along with survey and topographic data to model stream behavior.
Floodplain Mapping
Flood Hazard Mapping involves plotting the extents of calculated water surface elevations on maps using hydraulic model results and topographic data. These maps can be used by community leaders to identify hazard mitigation opportunities and make development decisions. It's anticipated that this data will eventually be used to update FEMA's Flood Insurance Rate Maps.