Camenen B., Dramais G., Le Coz J., Ho T. D., Gratiot Nicolas, Piney S. (2017). Estimation d’une courbe de tarage hauteur-dénivelée-débit pour une rivière influencée par la marée. Houille Blanche : Revue Internationale de l'Eau, (5), p. 16-21. ISSN 0018-6368.
Titre du document
Estimation d’une courbe de tarage hauteur-dénivelée-débit pour une rivière influencée par la marée
Camenen B., Dramais G., Le Coz J., Ho T. D., Gratiot Nicolas, Piney S.
Source
Houille Blanche : Revue Internationale de l'Eau, 2017,
(5), p. 16-21 ISSN 0018-6368
A simple rating curve model using two water level measurements is proposed for tidal rivers. It is based on the Manning-Strickler equation adapted for possible negative slopes resulting from a negative discharge (upstream directed). The model calibration can be achieved thanks to two parameters only: the Strickler coefficient and the temporal lag between the measured slope and the slope to be applied at the reference section. The model has been applied to two tidal rivers for which ADCP gaugings have been achieved during two tidal cycles: the Saigon River in Vietnam and the Seine River in France. Results are encouraging for the Saigon River where water level variations remain mild. For the Seine River case, results are not as good due to a sharp variation of the water level and discharge during the flow tide that makes the calibration difficult. Nevertheless, the proposed model appears to be valid for tidal rivers as soon as the discharge temporal gradient during the tide flow remains moderate.
