Fluids, hydraulics and flows
V-notch weir flow
Calculates V-notch weir flow from notch angle, head, and discharge coefficient.
Related calculators
Rectangular weir flow
Calculates rectangular-weir flow using a user-supplied discharge coefficient.
Manning open-channel flow
Calculates auxiliary open-channel flow from area, hydraulic radius, slope, and Manning coefficient.
Manning flow rate
Calculates open-channel flow with Manning equation from area, hydraulic radius, and slope.
Hydraulic radius
Calculates hydraulic radius from flow area and wetted perimeter.
Rectangular channel area
Calculates rectangular channel flow area from width and depth.
Rectangular channel critical depth
Calculates critical depth from flow rate and rectangular channel width.