The following photos were originally captured by ICCEM-CLSU PHIL-LiDAR 1 researchers during the hydrologic data gathering in Santo Tomas River Watershed. The activity aimed to generate flood hazard map of the Santo Tomas River Watershed, Zambales, Philippines.
CLSU PHIL-LiDAR researchers during the courtesy call to the Mayor’s office in San Narciso, Zambales on August 3, 2015. Proper coordination was done prior to the field conduct activities.
This photo was taken during the actual measurement of water level in Santo Tomas River at base flow condition. In photo is Engr. Nicasio Salvador last August 3, 2015.
Mr. Christopher Genaro while attaching the rain gauge funnel and graduated cylinder to the stamped steel stand (August 4, 2015).
Calibration of water level sensor, (August 4, 2015) is a standard procedure being undertaken by the researchers before using the instrument in every study area. In photo is Engr.Raneses Jr. while doing the calibration of the water level sensor.
The research team in actions while assembling (A) the water flow meter and (B) deployment of water level sensor under the Maculcul Bridge on August 4,2015.
Mr. Genaro while observing the rainfall depth gauge on August 4,2015. Rainfall depth is measured using a rain gauge and a graduated cylinder.
Engr. Jose Gavino and Engr. Bennidict Pueyo while doing the actual measurement of rainfall depth and river stream flow during heavy rainfall at Maculcul Bridge last August 10, 2015.
Engr. Salvador, Engr. Raneses Jr., Mr. Genaro and their guide, which is a local resident of the area while conducting the stream flow measurement at the Mapanuepe lake outlet last August 12, 2015.
A photo shot of Santo Tomas River at San Narciso, Zambales, Philippines by Nicasio Salvador on December 4, 2014. A desert like feature of the Santo Tomas River experienced during dry season. Santo Tomas river was heavily devastated by lahar a by product of the eruption of Mount Pinatubo eruption in 1991.
Santo Tomas Watershed is located on the southern part of the province of Zambales, under the administrative jurisdiction of CENR Office of Olongapo City. Bounded on the North by municipalities of Botolan and San Felipe; on the South by municipalities of Subic, Castillejos and San Marcelino: on the West by South China Sea/Philippine Sea: and on the East by Mount Dutdut bordering the province of Pampanga. It is geographically located at 120Â° 3â€™ 38.40â€ to 120Â° 22â€™ 6.27â€longitude and 15Â° 21â€™16.09â€ to 14Â° 59â€™10.69â€ latitude covering the municipalities of Botolan, San Felipe, San Narciso, San Marcelino, Castillejos and Subic, Zambales.
A very dry river of Santo Tomas at Maculcul Bridge, San Narciso, Zambales, Philippines a phenomenon encountered every dry season. (Photo by Christopher Genaro, December 4, 2014)
Santo Tomas Watershed covers an area of 26,244.61 hectares with a total length of 47.52 kilometers covering 25 barangays within the six (6) municipalities namely: Botolan (Moraza), San Felipe (Santo. NiÃ±o), San Narciso (Umaya, Libertad, Paete, Grullo, Alusiis, La Paz, Namatacan), San Marcelino (Aglao, Buhawen, Sta Fe, San Rafael, Rabanes, San Guillermo, Laoag, Lucero, Burgos, Rizal, Consuelo Norte, Consuelo Sur), Castillejos (San Pablo, Nagbunga) and Subic (Batiawan and Naugsol), Zambales supporting existing irrigation works mainly for agricultural production. It was heavily devastated by the eruption of mounth Pinatubo causing heavy damaged to vegetation and changed drainage pattern. Drastic changed in wÃ¡ter quality of the river was also experienced due to the operation of the Benguet Consolidated Incorporation-Dizon-Copper Operation (BCI-DCO), (Source: DENR, 2008).
Remote Sensing Activities
Researchers Engr. Eleazar Raneses Jr. (left) and Engr. Bennidict Pueyo (right) while looking for the exact coordinates of the sampling point for distance measurement gathering at North Coast of Santo Tomas River Watershed, Zambales. Coastline change detection on the North and South Coast of Santo Tomas River watershed is part of the Remote Sensing Study of the LiDAR 1 Project. Photo by Mr. Christopher Genaro on July 2015
Engr. Jose Gavino while positioning the Global Navigation Satellite System (Rover) on the exact coordinates of the sampling point at Santo Tomas River outlet to measure width size of the river outlet. At his back is Engr. Bennidict Pueyo (right) while reading the handheld GPS. Photo was taken last July 2015 by Engr. Eleazar Raneses Jr.
The photo shows that the riverbank was impacted with lahar. Lahar was created after the dreadful eruption of Mount Pinatubo in 1991. Occurrence of lahar following the eruption blocked drainages of the mountain.
The photo was taken in one part of the upstream of the Santo Tomas River Watershed in Zambales, Philippines. LiDAR 1 researchers while measuring the width of the river bank of the upstream. This is a part of the validation activity in the Remote Sensing Study.