Reference

Existing rules for operation of Srinagarind and Khao Laem reservoirs and their effects on water management of Mae Klong irrigation system, 1998

Authors :

Varawoot Vudhivanich
Sittiporn Ngernprasertsri
Hironobu Sugiyama
Hideji Maita
Masayoshi Satoh

Summary :

The existing rules for operation of Srinagarind and Khao Laem reservoirs and of Vajiralongkorn diversion dam were studied. The actual daily and weekly reservoir releases and Vajiralongkorn diversion were analyzed using the daily data of 1994-1997. The combined weekly reservoir releases satisfied the Vajiralongkorn diversion requirements. The release characteristics of Srinagarind, Tha Thung Na and Khao Laem showed the similar variation pattern during the irrigation week (Thursday to Wednesday). The releases decreased considerably on Saturday and Sunday. The water level upstream of Vajiralongkorn diversion dam was effected, particularly in dry season, in such a way that it was declined from FSL of 22.50 m (MSL) during Sunday to Tuesday. Generally during the peak irrigation water requirements in dry season and the beginning of wet season, the water level upstream of Vajiralongkorn sometimes dropped below 22.20 m (MSL). This effected the water delivery operation of GMKIP canals. Consequently the tail-end canal water level dropped to the level that water could not flow to the Romijn Weir type offtake structures. One way to solve this problem is to use Tha Thung Na to reduce the release fluctuation. The other way is to increase the active storage of Vajiralongkorn by temporary setting the FSL at 22.70 m (MSL), 0.20 m above the existing rule, during Wednesday to Saturday to reduce the effect of reservoir release fluctuation.

Keywords :

Water management, Mae Klong irrigation, Srinagarind, Khao Laem

Contacts :

Varawoot Vudhivanich : fengvwv@nontri.ku.ac.th
Sittiporn Ngernprasertsri : Faculty of Engineering, Kasetsart University, Kamphaengsaen Campus, Nakhon Pathom, 73140 Thailand

Hironobu Sugiyama, Hideji Maita, Masayoshi Satoh : Institute of Agricultural and Forest Engineering, University of Tsukuba,Tsukuba, Ibaraki, 305-8572 Japan