Uncertainty Assessment: Reservoir Inflow Forecasting with Ensemble Precipitation Forecasts and HEC-HMS

Table 3

Selected precipitation gauges with hourly data records and the corresponding weights of Thiessen’s polygon, . The average rainfall of the Shihmen Reservoir catchment was calculated using Thiessen’s polygon method by (1).

ID	Location		Elevation	Weights by Thiessen’s polygon*
			(m)
21C050	273451	2745098	255	4.32
21C070	289171	2731177	1220	7.31
21C080	285756	2734043	620	9.29
21C090	289656	2726340	1260	10.02
21C140	286070	2743033	350	17.03
21D150	279651	2728316	780	9.34
21D160	275537	2720438	1620	11.52
21D170	280236	2718811	1630	12.74
21D350	286024	2713155	2000	14.46
21U110	297235	2727446	1150	3.97

*Data from the Shihmen Reservoir Management Center (http://www.wranb.gov.tw/).