San Cristobal River

Infobox_River
river_name = San Cristobal River


image_size =
caption =
origin =
mouth = Southern part of Laguna de Bay
basin_countries = Philippines
length =
elevation =
mouth_elevation = less than 2 meters above sea level
discharge =
watershed = The San Cristobal River (Tagalog: "Ilog ng San Cristobal") is a river system in Calamba City, Philippines. It is one of 21 major tributaries of Laguna de Bay.

Along with the San Juan River, it is one of the two major rivers that are the principal means by which Calamba's water drains into Laguna de Bay.Its watershed area covers Calamba City and the municipality of municipality of Cabuyaoin Laguna, and Tagaytay City and the municipality of Silang in Cavite. [Citation | last= | first= | author-link=Green Army Philippines Network Foundation, Inc. | last2= | first2= | author2-link=Forest Management Bureau, Department of Environment and Natural Resources, Republic of the Philippines | title=Final List of Watersheds Supporting 140 River Irrigation System of the NIA | date=2006 | year=2006 | url=http://greenarmynetwork.net/files/docs/watersheds-supporting-irrigation-systems.pdf. | accessdate=2007-09-30]

The San Cristobal River forms Calamba's northern boundary, Citation | last = | first = | author-link =Local Water Utilities Administration, Republic of the Philippines | last2 = | first2 = | author2-link = | title = World Bank Environmental Assessment Report: Calamba, Laguna | date =August 1997 | year =1997 | url =http://www-wds.worldbank.org/servlet/WDSContentServer/WDSP/IB/1999/08/15/000009265_3971201161307/Rendered/INDEX/multi_page.txt | accessdate=2007-09-30] with the other side of the river being the territory of the municipalities of with Silang, Cavite and Cabuyao, Laguna.Citation | last = | first = | author-link=Chan Robles Virtual Law Library | title =REPUBLIC ACT NO. 9024: AN ACT CONVERTING THE MUNICIPALITY OF CALAMBA, PROVINCE OF LAGUNA INTO A COMPONENT CITY TO BE KNOWN AS THE CITY OF CALAMBA. | date =5 March 2001 | year =2001 | url=http://www.chanrobles.com/republicactno9024.html | accessdate=2007-09-30]

Although a 1991 Study cited the San Pedro River and Morong River as the sources of eutrophication-causing minerals in Laguna de Bay, the Laguna Lake Development Authority (LLDA) has noted that more recent deterioration of the San Cristobal River (Calamba, Laguna) have made it one of the lake's major sources of nutrient loading. [Citation | last = | first = | author-link = Laguna Lake Development Authority | title = The Laguna de Bay Masterplan | date = | year = 1995 | url = http://www.llda.gov.ph/masterplan.htm | accessdate = 2007-09-30 ]

The LLDA's conservation efforts for the major tributaries and watersheds of Laguna de Bay have led to the creation of the Laguna de Bay River Basin Councils, of which the San Cristobal River Enhancement Defenders (SACRED) is particularly tasked with conservation of the San Cristobal. [Citation | last = | first = | author-link=Bayer Group | title =Project to protect waterways: Assistance for the San Cristobal | date =11 January 2007 | year =2007 | url =http://www.bayer.com/en/protecting-the-san-cristobal-river.aspx | accessdate =2007-09-30]

See also

* Laguna de Bay
* Laguna Lake Development Authority

References