The years the most river gauges reached major flood

2011 has the most river gauges at major flood in a single year, with 409, ahead of 2019 (405) and 2008 (353). The single worst month is June 2008, with 164 gauges across 11 states.

By year

Early years read low because fewer gauges existed.

Gauges reaching major flood stage by year

The worst months

Worst months by gauges at major flood

June 2008	164	11	IA, IL, IN, MN, MO, ND, NE, OK
March 1936	148	16	CT, DC, GA, MA, MD, ME, NE, NH
June 1972	147	13	DC, DE, MD, MT, NC, NJ, NY, OH
September 2004	135	17	AL, DE, FL, GA, IA, MD, MN, NC
March 2019	131	12	AR, IA, IL, KS, LA, MN, MO, MS
August 2011	125	11	CT, DE, MA, MD, NC, NH, NJ, NY
January 1996	123	9	DC, GA, MD, NJ, NY, OH, PA, VA
July 1993	120	11	IA, IL, KS, MN, MO, MT, ND, NE
May 2019	113	12	AR, IA, IL, KS, LA, MO, MS, MT
December 2015	105	15	AK, AL, AR, GA, IA, IL, KS, MO
April 2011	105	19	AL, AR, DE, IA, IL, IN, MD, MN
March 1913	102	12	GA, IL, IN, KY, MA, NC, NH, NY
September 2017	98	6	FL, GA, LA, OK, SC, TX
April 2013	97	7	IA, IL, IN, MI, MO, ND, WI
September 2018	92	15	AL, CT, DE, IA, IL, KS, MD, NC
April 1979	92	12	AL, AR, GA, IL, LA, ME, MN, MO
April 1997	90	11	FL, IA, IL, LA, MN, MS, ND, OK
November 1985	86	10	AR, DC, IL, LA, MD, MO, PA, TX
September 1999	85	8	DE, MD, NC, NJ, NY, PA, SC, VA
October 1986	84	10	AK, AR, IA, IL, KS, MI, MO, MT