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Hydrograph River at a Glance Download
North Saint Vrain Creek (CO) above Lyons Stage (ft)Flow (cfs)Observed: 4.01 ft at 3:39PM Jan 22, 2021Observed: 3.99 ft at 4:39PM Jan 22, 2021Observed: 3.98 ft at 5:39PM Jan 22, 2021Observed: 3.98 ft at 6:39PM Jan 22, 2021Observed: 3.98 ft at 7:39PM Jan 22, 2021Observed: 3.97 ft at 9:39PM Jan 22, 2021Observed: 3.96 ft at 10:39PM Jan 22, 2021Observed: 3.95 ft at 11:39PM Jan 22, 2021Observed: 3.91 ft at 12:39AM Jan 23, 2021Observed: 3.95 ft at 1:39AM Jan 23, 2021Observed: 3.95 ft at 2:39AM Jan 23, 2021Observed: 3.85 ft at 3:29AM Jan 23, 2021Observed: 3.83 ft at 3:39AM Jan 23, 2021Observed: 3.95 ft at 4:39AM Jan 23, 2021Observed: 3.96 ft at 5:39AM Jan 23, 2021Observed: 3.99 ft at 6:39AM Jan 23, 2021Observed: 3.98 ft at 8:39AM Jan 23, 2021Observed: 4 ft at 3:39PM Jan 23, 2021Observed: 3.99 ft at 5:39PM Jan 23, 2021Observed: 3.99 ft at 6:39PM Jan 23, 2021Observed: 3.99 ft at 7:39PM Jan 23, 2021Observed: 3.99 ft at 8:39PM Jan 23, 2021Observed: 3.99 ft at 9:39PM Jan 23, 2021Observed: 3.99 ft at 10:39PM Jan 23, 2021Observed: 4 ft at 11:39PM Jan 23, 2021Observed: 4.02 ft at 12:39AM Jan 24, 2021Observed: 3.98 ft at 1:39AM Jan 24, 2021Observed: 3.98 ft at 2:39AM Jan 24, 2021Observed: 3.98 ft at 3:39AM Jan 24, 2021Observed: 3.98 ft at 4:39AM Jan 24, 2021Observed: 3.97 ft at 5:39AM Jan 24, 2021Observed: 3.97 ft at 6:39AM Jan 24, 2021Observed: 4.07 ft at 7:22AM Jan 24, 2021Observed: 3.99 ft at 8:39AM Jan 24, 2021Observed: 3.97 ft at 9:39AM Jan 24, 2021Observed: 3.97 ft at 10:39AM Jan 24, 2021Observed: 3.98 ft at 2:39PM Jan 24, 2021Observed: 4.3 ft at 3:39PM Jan 24, 2021Observed: 3.99 ft at 4:39PM Jan 24, 2021Observed: 3.96 ft at 5:39PM Jan 24, 2021Observed: 3.99 ft at 7:39PM Jan 24, 2021Observed: 3.98 ft at 8:39PM Jan 24, 2021Observed: 4 ft at 9:39PM Jan 24, 2021Observed: 3.98 ft at 10:39PM Jan 24, 2021Observed: 3.97 ft at 11:39PM Jan 24, 2021Observed: 3.99 ft at 1:39AM Jan 25, 2021Observed: 3.99 ft at 2:39AM Jan 25, 2021Observed: 3.98 ft at 3:39AM Jan 25, 2021Observed: 3.99 ft at 4:39AM Jan 25, 2021Observed: 3.99 ft at 5:39AM Jan 25, 2021Observed: 3.98 ft at 6:39AM Jan 25, 2021Observed: 3.99 ft at 7:39AM Jan 25, 2021Observed: 3.99 ft at 8:39AM Jan 25, 2021Observed: 3.99 ft at 9:39AM Jan 25, 2021Observed: 3.99 ft at 10:39AM Jan 25, 2021Observed: 3.99 ft at 11:39AM Jan 25, 2021Observed: 3.98 ft at 12:39PM Jan 25, 2021Observed: 3.98 ft at 2:39PM Jan 25, 2021Observed: 3.97 ft at 4:39PM Jan 25, 2021Observed: 3.98 ft at 5:39PM Jan 25, 2021Observed: 3.98 ft at 6:39PM Jan 25, 2021Observed: 3.98 ft at 7:39PM Jan 25, 2021Observed: 3.97 ft at 8:39PM Jan 25, 2021Observed: 3.97 ft at 9:39PM Jan 25, 2021Observed: 3.98 ft at 10:39PM Jan 25, 2021Observed: 3.99 ft at 12:39AM Jan 26, 2021Observed: 3.98 ft at 1:39AM Jan 26, 2021Observed: 4.02 ft at 3:39AM Jan 26, 2021Observed: 4.03 ft at 4:39AM Jan 26, 2021Observed: 4.04 ft at 5:39AM Jan 26, 2021Observed: 4.05 ft at 6:39AM Jan 26, 2021Observed: 4.05 ft at 7:39AM Jan 26, 2021Observed: 4.11 ft at 8:39AM Jan 26, 2021Observed: 4.24 ft at 8:52AM Jan 26, 2021Observed: 4.46 ft at 9:04AM Jan 26, 2021Observed: 4.56 ft at 9:26AM Jan 26, 2021Observed: 4.6 ft at 9:39AM Jan 26, 2021Observed: 4.64 ft at 10:39AM Jan 26, 2021Observed: 4.69 ft at 11:39AM Jan 26, 2021Highest Observation: 4.79 ft at 11:55AM Jan 26, 2021Observed: 4.68 ft at 12:06PM Jan 26, 2021Observed: 4.65 ft at 2:39PM Jan 26, 2021Observed: 4.65 ft at 3:39PM Jan 26, 2021Observed: 4.63 ft at 4:39PM Jan 26, 2021Observed: 4.62 ft at 5:38PM Jan 26, 2021Observed: 4.59 ft at 6:39PM Jan 26, 2021Observed: 4.6 ft at 7:39PM Jan 26, 2021Observed: 4.43 ft at 8:19PM Jan 26, 2021Observed: 4.53 ft at 9:39PM Jan 26, 2021Observed: 4.54 ft at 10:39PM Jan 26, 2021Observed: 4.43 ft at 11:01PM Jan 26, 2021Observed: 4.63 ft at 12:21AM Jan 27, 2021Observed: 4.44 ft at 12:26AM Jan 27, 2021Observed: 4.48 ft at 12:39AM Jan 27, 2021Observed: 4.4 ft at 2:02AM Jan 27, 2021Observed: 4.49 ft at 2:39AM Jan 27, 2021Observed: 4.55 ft at 3:38AM Jan 27, 2021Observed: 4.65 ft at 4:15AM Jan 27, 2021Observed: 4.54 ft at 4:27AM Jan 27, 2021Observed: 4.32 ft at 5:39AM Jan 27, 2021Observed: 4.42 ft at 6:39AM Jan 27, 2021Observed: 4.31 ft at 7:03AM Jan 27, 2021Observed: 4.39 ft at 7:39AM Jan 27, 2021Observed: 4.28 ft at 8:31AM Jan 27, 2021Observed: 4.25 ft at 8:38AM Jan 27, 2021Observed: 4.35 ft at 9:39AM Jan 27, 2021Observed: 4.44 ft at 10:38AM Jan 27, 2021Observed: 4.46 ft at 11:38AM Jan 27, 2021Observed: 4.47 ft at 12:39PM Jan 27, 2021MHFDNSVC2(plotting HGIRZ) Graph Created (1:00PM Jan 27, 2021)ObservedLatest observed value: 4.47 ft at 12:39 PM MST 27-Jan-2021. Flood Stage is 10.5 ft
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About this graph
Tabular Data (UTC)
Tabular Data (MST)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Stage data may not be available during winter months.

NOTE: Forecasts are not available for the North Saint Vrain Creek (CO) above Lyons. Only observed stages are available for this point.

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Downstream Gauge Downstream Gauge - at Lyons
Flood Categories (in feet)
Major Flood Stage: 11.5
Moderate Flood Stage: 11
Flood Stage: 10.5
Action Stage: 10
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

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Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
5.5 FLOODING AT THE ROCK'N RIVER BED AND BREAKFAST INN AT HIGHWAY 36. CONSIDERABLE OVERBANK FLOW ALONG REACH
4 WATER INTO LOW LYING AREAS
About This Location Collapse

Latitude: 40.248100° N, Longitude: 105.297500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 10.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 5560 5570.5 Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
Additional Information Collapse
Observations provided by the Mile High Flood District in cooperation with Boulder County
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Denver/Boulder Weather Forecast Office
325 Broadway
Boulder, CO 80305-3328
(303) 494-4221
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Page last modified: 30-Oct-2020 4:08 PM
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