Google Map version 3 supported by WETALERT GMap is smartphone friendly. Some touch features, however, are difficult to navigate with smartphones. Desktop and laptop users should find this webpage easy to use. ALERT maps are also available from the Contrail website supported by OneRain. A “light” version of GMap designed for Twitter is also available (follow @UDFCD_FWP) or try our latest ArcGIS webmap.



AHPS-like application designed for rapid threat level assessment of ALERT stage gages

The AHPS-like webmap is designed for monitoring stream and reservoir water levels.  A Google Earth™ option is also available.  The NWS AHPS webpage is another good option.  AHPS is an NWS acronym the stands for “Advanced Hydrologic Prediction Service.” 


The WDT HydroWatch website is Flash™ dependent. Therefore, it is not smartphone friendly and will not work on Apple computers. Those users should try our new ArcGIS webmap.




UDFCD’s Flood Hazard Inventory Tool (FHIT) contains useful information about building structures, roadway crossings, trails and other features prone to flooding.

arcgisonline20150325A cell phone friendly ArcGIS webmap  with peak flow estimates from the September 2013 floods.


Lena Gulch Watershed

Monitor the Lena Gulch watershed in Jefferson County from a Contrail dashboard designed by OneRain that includes Gauge-Adjusted Radar Rainfall (GARR).





Dam Safety Information

Dam safety classifications and current structure status for all jurisdictional dams is available from the Colorado Division of Water Resources.  UDFCD has added the State’s GIS layer to our “Simple Web Map” for convenient reference.  To view this information select the Dam Safety layer using the ArcGIS layer control tool.  KDVR (FOX31) also has a very good website regarding this.



WaterWusgsatch and WaterAlert are other useful websites for finding real-time streamflow information available from the
U. S. Geological Survey.  A mobile-friendly version is also currently under development.

header_nrcsNRCS map of current snowpack conditions and other real-time data provided by the National Water and Climate Center.


A near real-time rainfall webmap for the U.S. courtesy of the National Hydrologic Warning Council member organizations.