South Platte River at Fort Lupton, CO

River level and flood forecast · Weld County

Normal3.4 ftas of Mon 2 PM

The river is 7.6 ft below flood stage (11 ft).

Flow: 140 cubic feet per second (USGS).

The last 7 days and the forecast

02.557.51012.515TueWedThuFriSatSunMonAction 10 ftFlood 11 ftModerate 13 ftMajor 15 ftNowObserved (ft)NWS forecast

NWS forecast issued Sun, Dec 31, 5 PM. Forecasts change as rain falls and as upstream water arrives.

Flood stages

Major flood stage15 ft
Moderate flood stage13 ft
Flood stage11 ft
Action stage10 ft
Record crest (September 13, 2013)10.98 ft

What floods at each level

From the National Weather Service, highest first.

  • 15 ftNumerous roads along and crossing the river are damaged and impassable. There is extensive flooding of agricultural land and inundation of structures near the river.
  • 14 ftSignificant flooding is likely, including some structures near the river between Fort Lupton and Platteville.
  • 13 ftWater flows over or around several bridges crossing the river. There is moderate flooding and damage to agricultural lands.
  • 12 ftSignificant lowland flooding occurs.
  • 11 ftThe river overflows its banks flooding agricultural lands. This level represents a flood that has a 10-percent chance of being equaled or exceeded in any given year. For more information click <a href="inundation/faq_google.php">here</a>.
  • 10 ftHigh flows begin to affect rural lowlands immediately adjacent to the river.

Highest crests on record

  1. 10.98 ft — September 13, 2013
  2. 10.82 ft — June 12, 2015
  3. 10.44 ft — April 25, 2007
  4. 9.93 ft — August 19, 2004
  5. 9.81 ft — July 13, 2011

Recent crests: 7.23 ft (June 26, 2021) · 6.93 ft (May 25, 2020) · 7.05 ft (July 21, 2019) · 6.71 ft (July 24, 2018) · 8.55 ft (May 18, 2017)

Up and down the river, and nearby

Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (LUPC2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.