Public Works and Highways Secretary Mark Villar said that a section of the
spillway was rendered impassable due to river overflow which occurred in the last rainy season, prompting the implementation of the project.
The cost of adding another
spillway has been estimated at Rs 500 crore.
Chheun said when the company does open the
spillway, four communes located near the dam - Mak Brang, Kampong Kreng, Prey Khmum and Stung Keo - will face flooding issues.
The work entailed raising the
spillway walls and replacing the steep section with a straight slope to ensure flood waters are contained within the channel.
The numerical model of the stepped
spillway (shown in Figure 1) consists of a press slope section, a smooth section, a stepped section, and tail water section.
The gates open and release water down a
spillway when the water level behind the dams gets too high.
It involved the opening of a
spillway. But first, some background:
Shaft
spillway is a
spillway composed of a circular crest that directs the flow to an inclined or vertical axis, which is connected to a low gradient tunnel.
Connecting the basin reservoir to the
spillway reservoir is done by a field-tee on which two valves were used to adjust the inlet discharge.
The affected persons of Shishkit and Gulmit had given the administration deadline of June 29 but Force Commander Gilgit-Baltistan asked for three more days for widening of Ataabad Lake
spillway.
In the other case the lake can start disintegrating from downstream very slowly and water leaks out in a pretty safe manner through the
spillway. There are two possibilities in this regard; either the
spillway continuously gets enlarged by erosion and all the water flows out or there is a chance that the erosion rate in the
spillway gets slow or even stops, and the outflow of water stops and
spillway will then require manual excavation for safe disposal of water.
Spillway: Meanwhile, Hunza Nagar Deputy Commissioner Zafar Waqar Taj said lake water was a mere 20 feet away from the
spillway.
