some irrigation data from Bureau of Agricultural Statistics

http://countrystat.bas.gov.ph/index.asp?cont=tables&pageid=pxweb/database/main/CORE/H_LANDUSE/H_LANDUSE.xml

• Area Harvested of Cereals, 1994-2008 (LUAHC102)
• Area Planted/Harvested of Crops (Other than Palay and Corn), 1990-2007 (LUAHO102)
• Irrigated Area of National Irrigation System, 1998-2007 (LUTIA102) --> need this...
• Irrigated Area by Type of Irrigation System, 1999-2007 (LUTIA601) --> and this...