Little Blue River (MO) at Knobtown

Highest listed crest 36.50 ftFlood stage 27.0 ft2 crests since 1986

The Little Blue River (MO) at Knobtown crested at major flood stage 1 time among the 2 crests the National Weather Service lists from 1986 to 2004. The highest, 36.50 ft on October 2, 1986, was major flooding, 9.50 feet above flood stage.

The gauge

Highest listed crest: 36.50 ft; October 2, 1986
Flood stage: 27.0 ft; Major flooding from 34.0 ft
Crests at major: 1; 94th of 173 gauges in Missouri
Most recent flood crest: May 19, 2004; 30.70 ft, moderate flooding
Location: Jackson County; Near Raytown (2.8 mi), Lee's Summit (3.7 mi), Grandview (7.7 mi)
Identifiers: NWS KBNM7; No USGS station

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Little Blue River (MO) at Knobtown

Action stage	21.0	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	27.0	0	—	Minimal or no property damage, but possibly some public threat
Moderate flood stage	29.0	1	May 19, 2004	Some inundation of structures and roads near the stream
Major flood stage	34.0	1	Oct 2, 1986	Extensive inundation of structures and roads

Every listed crest

2 crests from 1986 to 2004. Filled: at or above flood stage. Hover a crest for its date and stage.

Crests at or above flood stage, by decade

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Little Blue River (MO) at Knobtown

1	Oct 2, 1986	36.50	+9.50	Major	—
2	May 19, 2004	30.70	+3.70	Moderate	—

The worst floods along the Little Blue River (MO)

For this gauge's highest crests, the other gauges on the Little Blue River (MO) that crested above flood stage within a week.

May 19, 2004: 30.70 ft here, moderate flooding

Lake CityMO · May 19, 2004 · 22.24 ft · Minor

Gauges on the Little Blue River (MO)

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Little Blue River (MO)

Knobtown this gauge	MO	27.0	36.50 ft, Oct 2, 1986	1
Lees Summit Road - Independence	MO	21.0	27.82 ft, Aug 22, 2017	0
Lake City	MO	18.0	27.94 ft, Sep 14, 1961	2

Other gauges in Jackson County

Flood gauges in Jackson County

12th Street	30.0	38.00 ft, Sep 13, 1961	0
63rd Street	26.0	27.22 ft, Jul 2, 2024	0
71 Highway	27.0	35.82 ft, Jul 1, 2024	0
Bannister Road	34.0	44.46 ft, Sep 13, 1961	2
Blue Ridge Blvd Ext	35.0	44.50 ft, Sep 13, 1961	0
Stadium Drive	33.0	46.96 ft, May 15, 1990	1
Ward Parkway - Kansas City	46.0	53.00 ft, Sep 12, 1977	2
State Line Rd.	20.0	28.26 ft, Aug 22, 2017	2
Lees Summit Road - Independence	21.0	27.82 ft, Aug 22, 2017	0
Lake City	18.0	27.94 ft, Sep 14, 1961	2
Kansas City	32.0	48.87 ft, Jul 27, 1993	0

Jackson County: every hazard · River floods across the country · Missouri

NOAA National Water Prediction Service, gauge KBNM7, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.