The USGS provides practical, unbiased information about the Nation's rivers and streams that is
crucial in mitigating hazards associated with floods. This site provides information about the
USGS activities, data, and services provided during regional high-flow events, such as
hurricanes or multi-state flooding events. The USGS response to these events is typically
managed by the National Floods Specialist.
Indirect Flood Measurement
Policies, methods, and information regarding indirect flood measurements by the USGS.
- Barnes, H.H., Jr., and Davidian, J., 1978, Indirect methods in hydrometry, in Herschy, R.W., ed. Hydrometry: New York, John Wiley and Sons, p. 149-204.
- C-D Checklist: :
Critical Depth review checklist (.docx):
A starting point for checking/reviewing critical depth indirect measurement computations.
Dams and Weirs
For questions related to this site or to contribute content, please email
Todd Koenig or
Bob Holmes at the USGS Office of Surface Water.