Cloud seeding set over Magat watershed as dam level drops
RAMON, ISABELA—In an effort to help replenish water in Magat Dam, the Department of Agriculture (DA) has set cloud seeding operations this month over its watershed here, an agency official said on Thursday.
Roberto Busania, DA Cagayan Valley regional technical director for operation and extension, said they hoped that the operations would help raise the reservoir level so the dam could supply irrigation water to farmers and run the turbines of a hydropower plant.
Cloud seeding was approved after the National Irrigation Administration (NIA)-Magat River Integrated Irrigation System reported the steady decline of the dam’s water level, which has hampered power generation and irrigation supply.
Busania said the agency had allocated 30 flying hours for the Magat Dam watershed, as confirmed by the DA’s management committee, with P2.76 million set as initial funding. Operations will start this month until the end of September, subject to the availability of seedable clouds, he said.
Delayed planting
Water from Magat, a major reservoir that functions as a flood control facility, generates power as well as irrigate some 90,000 hectares of rice farms in Isabela, Quirino, Nueva Vizcaya and Ifugao provinces.
At 5 p.m. on Wednesday, the dam’s water elevation was at 163.89 meters above sea level (masl), receding to 163.78 masl by 5 a.m. on Thursday. Twelve days earlier, on June 20, the elevation was still at 170.82 masl. Magat’s normal high water level is 190 masl.
Edwin Viernes, NIA’s flood forecasting and instrumentation chief in Isabela, said the water recession has been at an average of 80 centimeters daily due to lack of heavy rains at the watershed in the past weeks.
He said that without significant rainfall, a “critically low level” could be recorded by July 15 unless irrigation supply would be further reduced or rationed among farmers.
The dwindling dam water has delayed land preparation and planting activities in some irrigated areas in northern Luzon. It also led to low oxygen in the water and pollution, contributing to the massive fish kill in the dam that affected about 1,200 operators and growers of tilapia, Bureau of Fisheries and Aquatic Resources-Isabela fishery officer Gerico Gibe earlier said.
Busania urged farmers to monitor weather conditions before planting to minimize the risk of crop losses, especially in corn-growing areas, due to insufficient rainfall.
Baguio supply improves
In Baguio, the seasonal rains began to replenish the city’s groundwater ahead of the full impact of an anticipated super El Niño by year-end.
But the city government is looking into a British-backed feasibility study for a bulk water supply system as a long-term solution to the summer capital’s water problems.
Even before the devastation wrought by the 1990 Luzon earthquake, the city was already rationing its tap water for decades. The carrying capacity of Baguio’s water resources was breached in 2002 due top overdevelopment and overpopulation.
Mayor Benjamin Magalong said a two-year feasibility study financed by the British government outlined how water can be pumped up to the city from sources like the Ambuklao Dam in Bokod, Benguet, some 36 kilometers away.
In the short term, an El Niño response plan encourages households and commercial establishments to invest in more water storage facilities and take advantage of the rains, which families have been collecting from rain gutters as far back as the 1960s, said Noriel Calpito, who heads the water production and distribution office of the Baguio Water District (BWD).
The BWD’s weather models show Baguio rains stretching until November but sees a strong El Niño from December until May.
Because of the past week’s downpour, 30 of the BWD’s 78 deep wells, comprising about 38 percent of Baguio’s water source, have shown signs of recovery from the dry months, although 25 deep wells still need recharging while 23 others have maintained their pumping levels throughout summer, Calpito said. —WITH A REPORT FROM VINCENT CABREZA INQ
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DA SETS INITIAL P2.76M TO FUND OPERATIONS UNTIL SEPTEMBER
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