Quels apports hydrologiques pour les modèles hydrauliques? Vers ...

that the robustness of the method can be tested on these points.5 Results and Discussion380This section discusses the results obtained by applying the coupled modeltel-00392240, version 1 - 5 Jun 2009385390395with two different formulations and six levels of lateral inflows injection. Theobjective was to quantify the sensitivity of the model’s results to differentcoupling options. The presentation of the results focuses first on identifyingthe best type of lateral inflow injection and second on the optimal spatialaggregation for these inflows.5.1 What type of lateral injections should be used? Point vs uniformly distributedstrategies5.1.1 Model PerformanceStarting from the observation that hydraulic models use both types of lateralinflows, we compared the respective merits of the two coupling options presentedin Section 4: the first option integrates point and uniformly distributedinflows, whereas the second option uses only point inflows. Figures 6, 7 and 8show the three performance criteria (NSE, E P and E T , as defined in Section 4)for the two lateral inflow formulations and six levels of inflow aggregation with1 to 6 tributaries considered.The results show that both coupling options lead to similar performance. Table2 summarises the best level of performance that can be expected fromthe two options regardless of their spatial distribution. At the Tahlequah sta-19