STATUS OF MAJOR MULTI-PURPOSE DAMS IN LUZON-PHILIPPINES 2009-Oct-30

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STATUS OF MAJOR MULTI-PURPOSE DAMS IN LUZON-PHILIPPINES 2009-Oct-30

20 October 2009 No Comment Add to Technorati Favorites

Dams	Observation Time & Date	Reservoir Water Level (m)	Normal High WL / Spilling Level (m)	Deviation from NHWL (m)	Gate Opening / Discharge or Outflow

Angat	10:00 AM	219.50	212.00	7.50
	30-Oct
Ipo	10:00 AM	100.61	100.87	-0.26
	30-Oct
La Mesa	10:00 AM	79.26	80.15	-0.89
	30-Oct
Ambuklao	10:00: AM	740.63	752.00	-11.37	4 gates (2.0 m)
	30-Oct				22 cms
Binga	10:00 AM	573.25	575.00	-1.75
	30-Oct
San Roque	10:00 AM	277.75	278.00	-0.25
	30-Oct
Pantabangan	10:00: AM	218.68	221.00	-2.32	1 gate (1.1 m) / 60 cms
	30-Oct
Magat	10:00 AM	188.89	193.00	-4.11
	30-Oct
Caliraya	10:00 AM	286.13	-	-
	30-Oct

Status of Major Dams in Luzon Philippines as of 2009-Oct-20

As of 4 AM, 2009-Oct-15

Updated: 2009-Oct-09 8 AM (GMT+8)

DAMS *click on dams to view hydrograph	OBSERVATION TIME & DATE	RESERVOIR WATER LEVEL (RWL)	FLOOD SEASON HIGH WATER LEVEL (FSHWL)	DEVIATION FROM FSHWL	ELEVATION FROM RULE CURVE	DEVIATION FROM RULE CURVE	Gate Operations	TOTAL DISCHARGE
(m AMSL)	(m AMSL)	(m)	(m AMSL)	(m)
Angat (Bulacan)	6:00 AM	213.84	212.00	1.84	188.03	25.81	closed at 1:30pm, o3 Oct	-
06 Oct 2009
San Roque (Pangasinan)	6:00 AM	285.40	280.00	5.40	271.94	13.46	-	-
06 Oct 2009
Binga (Benguet)	6:00 AM	571.10	575.00	-3.90	565.00	6.10	1 gt / 1 m	112.50 cms
06 Oct 2009
Ambuklao (Benguet)	6:00AM	741.94	752.00	-10.06	745.00	-3.06	6 gts /5 m	222.00 cms
06 Oct 2009
Magat (Isabela)	6:00 AM	191.35	193.00	-1.65	186.43	4.92	closed at 8:21am,5Oct
06 Oct 2009
Pantabangan (Nueva Ecija)	6:00AM	219.87	221.00	-1.13	208.49	11.38	1gt/3.2m	250.00 cms
06 Oct 2009
Ipo (Bulacan)	6:00 AM	100.14	101.00	-0.86	-	-	closed at 8:00 pm, 03 Oct
06 Oct 2009
La Mesa (Quezon City)	6:00 AM	79.74	80.15	-0.41	-	-	-	-
06 Oct 2009
Caliraya (Laguna)	6:00 AM	286.27	-	-	-	-	-	-

Dam Status as of October 5, 2009. Angat dam is still above the High Water Level. San Roque dam is now also above the High Water Level.

DAMS *click on dams to view hydrograph	OBSERVATION TIME & DATE	RESERVOIR WATER LEVEL (RWL)	FLOOD SEASON HIGH WATER LEVEL (FSHWL)	DEVIATION FROM FSHWL	ELEVATION FROM RULE CURVE	DEVIATION FROM RULE CURVE	GATE OPENING	TOTAL DISCHARGE
(m AMSL)	(m AMSL)	(m)	(m AMSL)	(m)
Angat (Bulacan)	6:00 AM	213.81	212.00	1.81	187.65	26.16	closed at 1:30pm, o3 Oct	-
05 Oct 2009
San Roque (Pangasinan)	6:00 AM	283.99	280.00	3.99	271.61	12.38	-	-
05 Oct 2009
Binga (Benguet)	6:00 AM	574.35	575.00	-0.65	565.00	9.35	3 gates (3 m)	469.00 cms
05 Oct 2009
Ambuklao (Benguet)	6:00 AM	741.94	752.00	-10.06	745.00	-3.06	6 gates (7.8 m)	140.00 cms
05 Oct 2009
Magat (Isabela)	6:00 AM	190.93	193.00	-2.07	186.38	4.55	closed at 8:21am,5Oct
05 Oct 2009
Pantabangan (Nueva Ecija)	06:00 AM	220.15	221.00	-0.85	208.43	11.72	1 gate (1.6 m)	150.00 cms
05 Oct 2009
Ipo (Bulacan)	06:00 AM	100.44	101.00	-0.56	-	-	closed at 8:00 pm, 03 Oct
05 Oct 2009
La Mesa (Quezon City)	06:00 AM	79.84	80.15	-0.29	-	-	-	-
05 Oct 2009
Caliraya (Laguna)	06:00 AM	286.25	-	-	-	-	-	-

Location of Dams in Luzon

Status Of Major Dams in Luzon
October 5, 2009

The PAGASA-DOST being the lead Agency in the Flood Forecasting and Warning System for Dam Operation (FFWSDO) informed all the concerned government agencies, local government units the status of the monitored reservoirs in Luzon as of 10:00 AM today.

The Pantabangan Dam continues to spill 150 cubic meters per second (cms), with 2 gates open and a total opening of 3.2 meters. Although the outflow is minimal compared to the carrying capacity of the upper Pampanga river, the municipalities/city in the province of Nueva Ecija that are likely to be affected by the release of Pantabangan dam are: Rizal, Bongabon, Gen. Natividad, Palayan City, Cabanatuan City, and Sta. Rosa.

The reservoir water level (RWL) is now at 220.15 meters above mean sea level (m. AMSL) and is 0.85 meters below the normal level of 221.0 m AMSL. Although light rains still prevail over the watershed, the Pantabangan dam spillways will remain open until the inflow into the reservoir will become stable.

Angat Dam has an elevation of 213.81m. AMSL and its spillway gates are closed since there is no major weather disturbance that threatens the watershed. For Ipo dam, located about 7 kilometers downstream of Angat dam, its present elevation is 100.44 meters (about 0.56 meters from its spilling level of 101 meters). The target areas of Angat/Ipo dams are the municipalities of Bulacan namely: Norzagaray, Angat , San Rafael, Bustos, Baliuag, Pulilan, Plaridel and Hagonoy.

As of 9:00AM today, the Magat dam spillways were closed since TY Pepeng is too far to affect the watershed of Magat. The RWL of Magat is at 190. 93 m. AMSL (about 2.07 meters below the normal high water level of 193.0 m. AMSL. With the passage of TY Pepeng, no major flooding was noted within the target area of Magat dam which include the municipalities of Ramon, San Mateo, Aurora, Cabatuan, Luna, Reina Mercedes, Burgos, Naguilian and Gamu in the province of Isabela.

The Agno river is regulated by three (3) reservoirs namely: Ambuklao and Binga in Benguet and San Roque dam in Pangasinan. During the passage of Typhoon Pepeng, the spillways of Ambuklao and Binga dams were operated due to the moderate to heavy rains in the upper reaches of the watershed resulting in the increase in the RWL of San Roque dam. At present, RWL of San Roque is at 283.99 m. AMSL which is 4.01 meters below the normal level of 288.0 m. AMSL. The light rainfall forecasts for the next 24 hours over the upper Agno river basins and the outflow from Binga dam of 469 cms (3 gates open and total of 3 meters opening) are not sufficient to fill the San Roque dam to its normal level within the next couple of days and therefore will not warrant the operation of its spillways. In the event that San Roque dam will open its spillways, the municipalities that are likely to be affected in Pangasinan are: San Manuel, San Nicolas, Tayug, Sta. Maria, Asingan, Villasis, Alcala, Bautista, Rosales and Bayambang.

All residents along the upper Pampanga river and upper Agno river are advised to take precautionary measures and stay tuned to warnings/advisories from PAGASA. The PAGASA will continue to provide update on the monitored reservoirs until such time that all spillway operations are terminated.

————————–

DAMS *click on dams to view hydrograph	OBSERVATION TIME & DATE	RESERVOIR WATER LEVEL (RWL)	FLOOD SEASON HIGH WATER LEVEL (FSHWL)	DEVIATION FROM FSHWL	ELEVATION FROM RULE CURVE	DEVIATION FROM RULE CURVE	GATE OPENING	TOTAL DISCHARGE
(m AMSL)	(m AMSL)	(m)	(m AMSL)	(m)
Angat (Bulacan)	6:00 AM	213.49	212.00	1.49	187.28	26.21	closed at 1:30pm, o3 Oct	-
04 Oct 2009
San Roque (Pangasinan)	06:00 AM	280.30	280.00	0.30	271.29	9.01	-	-
04 Oct 2009
Binga (Benguet)	06:00 AM	573.60	575.00	-1.40	565.00	8.60	6 gates (10 m)	1,191 cms
04 Oct 2009
Ambuklao (Benguet)	06:00 AM	742.97	752.00	-9.03	745.00	-2.03	6 gates (18 m)	1,343 cms
04 Oct 2009
Magat (Isabela)	06:00 AM	190.42	193.00	-2.58	186.29	4.13	1 gate (1 m)	196 cms
04 Oct 2009
Pantabangan (Nueva Ecija)	06:00 AM	220.17	221.00	-0.83	208.37	11.80	closed at 10:30 am, 03 Oct	-
04 Oct 2009
Ipo (Bulacan)	06:00 AM	100.54	100.87	-0.33	-	-	closed at 8:00 pm, 03 Oct
04 Oct 2009
La Mesa (Quezon City)	06:00 AM	79.94	80.15	-0.21	-	-	-	-
04 Oct 2009
Caliraya (Laguna)	06:00 AM	286.48	-	-	-	-	-	-
04 Oct 2009

Dam Status as of October 4, 2009. Angat dam is still above the High Water Level.

Dams status as of October 3, 2009. Angat dam is now above the High Water Level compared to yesterday.

DAMS *click on dams to view hydrograph	OBSERVATION TIME & DATE	RESERVOIR WATER LEVEL (RWL)	FLOOD SEASON HIGH WATER LEVEL (FSHWL)	DEVIATION FROM FSHWL	ELEVATION FROM RULE CURVE	DEVIATION FROM RULE CURVE	GATE OPENING	TOTAL DISCHARGE (CMS)
(m AMSL)	(m AMSL)	(m)	(m AMSL)	(m)
Angat (Bulacan)	6:00 AM	212.35	212.00	0.35	186.91	25.44	3 gates (1m)	362.00
03 Oct 2009
San Roque (Pangasinan)	6:00 AM	277.95	280.00	-2.05	270.97	6.98	-	-
03 Oct 2009
Binga (Benguet)	7:00 AM	572.70	575.00	-2.30	565.00	7.70	2 gates (1.5m)	170.00
03 Oct 2009
Ambuklao (Benguet)	6:00 AM	740.91	752.00	-11.09	745.00	-4.09	6 gates (3 m)
03 Oct 2009
Magat (Isabela)	7:00 AM	190.04	193.00	-2.96	186.21	3.83	1 gate (2.0m)	233.00
03 Oct 2009
Pantabangan (Nueva Ecija)	6:00 AM	219.32	221.00	-1.68	208.31	11.01		230.00
03 Oct 2009
Ipo (Bulacan)	7:00 AM	100.20	100.87	-0.67	-	-	4 gates (3.5m)	540.00
03 Oct 2009
La Mesa (Quezon City)	6:00 AM	79.82	80.15	-0.33	-	-	-
03 Oct 2009
Kaliraya (Laguna)	6:00 AM	286.44	-	-	-	-	-
03 Oct 2009

DAMS *click on dams to view hydrograph	OBSERVATION TIME & DATE	RESERVOIR WATER LEVEL (RWL)	FLOOD SEASON HIGH WATER LEVEL (FSHWL)	DEVIATION FROM FSHWL	ELEVATION FROM RULE CURVE	DEVIATION FROM RULE CURVE	GATE OPENING
(m AMSL)	(m AMSL)	(m)	(m AMSL)	(m)	(m)
Angat	6:00 AM	211.87	212.00	-0.13	186.54	25.33	1 gate / 1m
02 Oct 2009
San Roque	6:00 AM	278.04	280.00	-1.96	270.65	7.39
02 Oct 2009
Binga	6:00 AM	574.46	575.00	-0.54	565.00	9.46	1 gate / 1 m
02 Oct 2009
Ambuklao	6:00 AM	741.46	752.00	-10.54	745.00	-3.54	3 gates/ 3 m
02 Oct 2009
Magat	6:00 AM	190.70	193.00	-2.30	186.14	4.56	3 gate/ 5 m
02 Oct 2009
Pantabangan	6:00 AM	219.52	221.00	-1.48	208.25	11.27	4 gates / 4.8 m
02 Oct 2009
Ipo	6:00 AM	100.25	100.87	-0.62			2 gates / 0.75 m

Dams status as of October 2, 2009. Angat dam is now below the High Water Level compared to yesterday.

UPDATE 2009-Oct-02 12:30PM

Angat has been gradually releasing water since Tuesday to stop it from reaching spilling level. Aside from providing 97 percent of the domestic water supply in Metro Manila, it also irrigates about 27,000 hectares of farmlands in Bulacan and facilitates flood control in the province.

Date Updated:	01 October 2009
Time Updated:	6:00 AM

Status of Angat Dam. Water level of reservoir. As you can see, the water level went above the spilling level last Sept 26-27.

As of October 1, 6:00 AM, Angat Dam reservoir water level is 212.57m. It is 0.57m above the Flood Season High Water Level! Does this mean they will open the dam again? Or are they going to wait until it reaches the level it reached last Sept 26 at the height of typhoon Ondoy, and open it up until it submerges Metro Manila AGAIN?!?

DAMS *click on dams to view hydrograph	OBSERVATION TIME & DATE	RESERVOIR WATER LEVEL (RWL)	FLOOD SEASON HIGH WATER LEVEL (FSHWL)	DEVIATION FROM FSHWL	ELEVATION FROM RULE CURVE	DEVIATION FROM RULE CURVE	GATE OPENING
(m AMSL)	(m AMSL)	(m)	(m AMSL)	(m)	(m)
Angat	6:00 AM	212.57	212.00	0.57	186.17	26.40	3 gate / 3m
01 Oct 2009
San Roque	6:00 AM	278.60	280.00	-1.40	270.32	8.28
01 Oct 2009
Binga	6:00 AM	573.65	575.00	-1.35	565.00	8.65	1 gate / 0.5m
01 Oct 2009
Ambuklao	6:00 AM	741.46	752.00	-10.54	745.00	-3.24	3 gates/ 3 m
01 Oct 2009
Magat	6:00 AM	191.14	193.00	-1.86	186.07	5.07	1 gate/ 1 m
01 Oct 2009
Pantabangan	6:00 AM	219.73	221.00	-1.27	208.19	11.54	2 gates / 180cms
01 Oct 2009
Ipo	6:00 AM	100.68	100.87	-0.19			4 gates / 1.8 m
01 Oct 2009