I don't remember mapping this one, but suspect that "usage=spillway" here is incorrect - it's a fish ladder.
Correct here would have been to do what you did at https://www.openstreetmap.org/way/374759289#map=20/54.0337748/-1.2382691&layers=H and remove "usage" and leave "water=fish_pass" (rare https://overpass-turbo.eu/s/2cAG , but descriptive).