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Calamus River near Harrop

Highest listed crest 7.75 ftFlood stage 7.5 ft33 crests since 1987

The Calamus River near Harrop crested above flood stage 1 time among the 33 crests the National Weather Service lists from 1987 to 2025. The highest, 7.75 ft on June 12, 2010, was minor flooding, 0.25 feet above flood stage.

The gauge

Highest listed crest
7.75 ft
June 12, 2010; 3,260 cubic feet per second
Flood stage
7.5 ft
Major flooding from 10.0 ft
Crests at major
0
1 above flood stage
Most recent flood crest
June 12, 2010
7.75 ft, minor flooding
Location
Loup County
Nebraska

Flood stages

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

Flood categories, Calamus River near Harrop
Action stage7.02Feb 8, 2021The level at which the NWS or its partners begin to take action
Flood stage (minor)7.51Jun 12, 2010Minimal or no property damage, but possibly some public threat
Moderate flood stage9.00—Some inundation of structures and roads near the stream
Major flood stage10.00—Extensive inundation of structures and roads

Every listed crest

33 crests from 1987 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Calamus River near Harrop, 1987 to 2025 246810ft Flood stage 7.5 ftMajor 10.0 ft Mar 29, 1987: 5.34 ft, below flood stageMay 28, 1995: 4.68 ft, below flood stage; 1,380 cubic feet per secondJun 26, 1998: 4.43 ft, below flood stage; 837 cubic feet per secondMay 7, 1999: 4.07 ft, below flood stage; 659 cubic feet per secondMay 20, 2000: 3.90 ft, below flood stage; 547 cubic feet per secondMay 7, 2001: 4.63 ft, below flood stage; 719 cubic feet per secondMar 12, 2002: 4.17 ft, below flood stage; 414 cubic feet per secondMay 11, 2003: 4.41 ft, below flood stage; 449 cubic feet per secondMay 23, 2004: 4.74 ft, below flood stage; 584 cubic feet per secondApr 24, 2005: 4.81 ft, below flood stage; 520 cubic feet per secondMar 31, 2006: 4.88 ft, below flood stage; 508 cubic feet per secondMay 9, 2007: 5.15 ft, below flood stage; 592 cubic feet per secondMay 25, 2008: 5.70 ft, below flood stage; 747 cubic feet per secondJun 18, 2009: 5.55 ft, below flood stage; 626 cubic feet per secondJun 12, 2010: 7.75 ft, minor flooding; 3,260 cubic feet per secondJun 29, 2011: 5.68 ft, below flood stage; 711 cubic feet per secondOct 10, 2012: 5.18 ft, below flood stage; 507 cubic feet per secondJun 1, 2013: 4.96 ft, below flood stage; 459 cubic feet per secondJun 11, 2014: 5.62 ft, below flood stage; 677 cubic feet per secondApr 19, 2015: 3.73 ft, below flood stage; 483 cubic feet per secondMay 2, 2016: 5.32 ft, below flood stage; 589 cubic feet per secondMay 23, 2017: 4.89 ft, below flood stage; 420 cubic feet per secondOct 1, 2017: 5.41 ft, below flood stage; 595 cubic feet per secondFeb 10, 2018: 6.58 ft, below flood stageSep 14, 2019: 6.90 ft, below flood stage; 1,860 cubic feet per secondJan 21, 2020: 7.34 ft, action stageJun 11, 2020: 6.16 ft, below flood stage; 886 cubic feet per secondFeb 8, 2021: 7.09 ft, action stageMar 16, 2021: 5.74 ft, below flood stage; 705 cubic feet per secondMay 2, 2022: 5.41 ft, below flood stage; 541 cubic feet per secondMay 13, 2023: 5.28 ft, below flood stage; 439 cubic feet per secondOct 13, 2023: 5.24 ft, below flood stage; 514 cubic feet per secondJun 23, 2025: 5.83 ft, below flood stage; 605 cubic feet per second Highest, 7.75 ft, Jun 12, 2010 1990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Calamus River near Harrop 1980s: 0 1990s: 0 2000s: 0 2010s: 1 1 2020s: 0 1980s1990s2000s2010s2020s
  1. 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.
  2. 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, Calamus River near Harrop
1Jun 12, 20107.75+0.25Minor3,260
2Jan 21, 20207.34−0.16Action—
3Feb 8, 20217.09−0.41Action—
4Sep 14, 20196.90−0.60Below flood stage1,860
5Feb 10, 20186.58−0.92Below flood stage—
6Jun 11, 20206.16−1.34Below flood stage886
7Jun 23, 20255.83−1.67Below flood stage605
8Mar 16, 20215.74−1.76Below flood stage705
9May 25, 20085.70−1.80Below flood stage747
10Jun 29, 20115.68−1.82Below flood stage711
11Jun 11, 20145.62−1.88Below flood stage677
12Jun 18, 20095.55−1.95Below flood stage626
13Oct 1, 20175.41−2.09Below flood stage595
14May 2, 20225.41−2.09Below flood stage541
15Mar 29, 19875.34−2.16Below flood stage—
16May 2, 20165.32−2.18Below flood stage589
17May 13, 20235.28−2.22Below flood stage439
18Oct 13, 20235.24−2.26Below flood stage514
19Oct 10, 20125.18−2.32Below flood stage507
20May 9, 20075.15−2.35Below flood stage592
21Jun 1, 20134.96−2.54Below flood stage459
22May 23, 20174.89−2.61Below flood stage420
23Mar 31, 20064.88−2.62Below flood stage508
24Apr 24, 20054.81−2.69Below flood stage520
25May 23, 20044.74−2.76Below flood stage584
26May 28, 19954.68−2.82Below flood stage1,380
27May 7, 20014.63−2.87Below flood stage719
28Jun 26, 19984.43−3.07Below flood stage837
29May 11, 20034.41−3.09Below flood stage449
30Mar 12, 20024.17−3.33Below flood stage414
31May 7, 19994.07−3.43Below flood stage659
32May 20, 20003.90−3.60Below flood stage547
33Apr 19, 20153.73−3.77Below flood stage483

Gauges on the Calamus River

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

Flood gauges on the Calamus River
BurwellNE8.08.90 ft, Jan 26, 19670
Harrop this gaugeNE7.57.75 ft, Jun 12, 20100

Other gauges in Loup County

Flood gauges in Loup County
Taylor7.09.50 ft, Feb 25, 19570

Loup County: every hazard · River floods across the country · Nebraska

NOAA National Water Prediction Service, gauge TLRN1, 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.