An expanded rating curve model to estimate river discharge during tidal influences across the progressive-mixed-standing wave systems.

ABSTRACT: Empirically quantifying tidally-influenced river discharge is typically laborious, expensive, and subject to more uncertainty than estimation of upstream river discharge. The tidal stage-discharge relationship is not monotonic nor necessarily single-valued, so conventional stage-based river rating curves fail in the tidal zone. Herein, we propose an expanded rating curve method incorporating stage-rate-of-change to estimate river discharge under tidal influences across progressive, mixed, and standing waves. This simple and inexpensive method requires (1) stage from a pressure transducer, (2) flow direction from a tilt current meter, and (3) a series of ADP surveys at different flow rates for model calibration. The method was validated using excerpts from 12 tidal USGS gauging stations dur

SUBMITTER: Jones AE 

PROVIDER: S-EPMC6919628 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature