headcut
nounEtymology From head + cut.
1
An erosional feature of some intermittent and perennial streams with an abrupt vertical drop (knickpoint) in the stream bed.
- Above the lower headcut, phreatophytic mesquite and little leaf sumac hug the banks, drawing pendulate water from the silts remaining from former marsh deposits and sending long taproots into channel stores.2007, Susan L. Woodward, “Modern Vegetation of the Murray Springs Area and the Upper San Pedro Valley”, in Caleb Vance Haynes, Bruce B. Huckell, editor, Murray Springs, page 58: