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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Hydrograph River at a Glance Download
Blue River at Colorado Avenue Stage (ft)Flow (kcfs)Highest Observation: 7.42 ft at 8:15PM Sep 24, 2023Observed: 7.4 ft at 10:30PM Sep 24, 2023Observed: 7.2 ft at 10:45PM Sep 24, 2023Observed: 7.04 ft at 2:30AM Sep 25, 2023Observed: 7 ft at 6:30AM Sep 25, 2023Observed: 6.8 ft at 8:55AM Sep 25, 2023Observed: 6.62 ft at 10:30AM Sep 25, 2023Observed: 6.82 ft at 10:50AM Sep 25, 2023Observed: 6.68 ft at 2:30PM Sep 25, 2023Observed: 6.64 ft at 6:30PM Sep 25, 2023Observed: 6.42 ft at 8:25PM Sep 25, 2023Observed: 6.4 ft at 10:30PM Sep 25, 2023Observed: 6.4 ft at 2:30AM Sep 26, 2023Observed: 6.42 ft at 6:30AM Sep 26, 2023Observed: 6.28 ft at 10:30AM Sep 26, 2023Observed: 6.32 ft at 2:30PM Sep 26, 2023Observed: 6.2 ft at 6:30PM Sep 26, 2023Observed: 6.14 ft at 10:30PM Sep 26, 2023Observed: 6.2 ft at 2:30AM Sep 27, 2023Observed: 6.16 ft at 6:30AM Sep 27, 2023Observed: 6.04 ft at 10:30AM Sep 27, 2023Observed: 6.08 ft at 2:30PM Sep 27, 2023Observed: 6.02 ft at 6:30PM Sep 27, 2023BVCM7(plotting HGIRR) Graph Created (7:04PM Sep 27, 2023)ObservedLatest observed value: 6.02 ft at 6:30 PM CDT 27-Sep-2023. Flood Stage is 31 ft
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Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NAVD88
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Blue River at Colorado Avenue are issued as needed during times of high water, but are not routinely available.

Vertical datum height surveyed by the USGS

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Upstream Gauge - at 63rd Street Upstream Gauge Downstream Gauge Downstream Gauge - at Stadium Drive
Flood Categories (in feet)
Major Flood Stage: 37
Moderate Flood Stage: 36
Flood Stage: 31
Action Stage: 26
Low Stage (in feet): -9999

Historic Crests

(P): Preliminary values subject to further review.

Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:16
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Gauge LocationGauge Map Marker
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
42 Flooding begins to affect numerous structures.
39 Several buildings along the river begin to flood.
37 Flooding begins to affect the area of Highway 350 - Blue Parkway, Manchester Trafficway, and Hardesty Avenue.
36 Flood waters approach Hardesty Avenue.
33 Flooding begins to affect Blue Banks Avenue just south of Blue Parkway.
31 Flood waters approach Brighton Avenue.
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Latitude: 39.036667° N, Longitude: 94.522500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 31 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 724.969 ft 755.969 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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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
Kansas City/Pleasant Hill Weather Forecast Office
1803 N. 7 Hwy
Pleasant Hill, MO 64080
(816) 540-6021
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