Laguna (province) producing of fish. Carp and tilapia fingerlings are also being grown in inland ponds and freshwater fish pens. There are a total of 457 operators utilizing an area of for fish pens and fish cages. Aside from the Laguna de Bay, approximately 12% of the area in the Seven Lakes of San Pablo is being used for aquaculture. Laguna is home to twenty-one economic zones as registered under the Philippine Economic Zone Authority. Most of these economic zones are located in Santa Rosa, Biñan, and Calamba. The largest economic zone in Laguna is the Laguna Technopark, located in Santa Rosa
Laguna de Santa Rosa inches (117 cm), is a gray and light brownish gray moderately alkaline clay. Wright loams are also present within the Laguna. The slope of the drainage basin is typically zero to two percent. The Laguna de Santa Rosa is a principal tributary of Mark West Creek. Largest among the many tributaries of the Laguna are Santa Rosa Creek, Copeland Creek, Hinebaugh Creek, Five Creek, Washoe Creek and Blucher Creek. The Laguna consists of a winding ribbon of flow in the dry summer season and a massive floodplain that resembles a series of lakes in the winter storm season. There are