DETERMINATION OF RATE STRUCTURE BASED ON THE RIVER COMMUNITY HEALTH MAKROAVERTEBRATA IN CIHIDEUNG RIVER, BOGOR REGENCY.

The increasing number of settlements in the Watershed (Watershed) Cihideung can threaten damage to the environment surrounding watershed, such as water quality degradation that can lead to many water crisis in this country. One aspect that can be assessed for changes in water quality based on biological aspects of the Makroavertebrata is commonly known as a water bioindikator. Makroavertebrata are relatively sedentary organisms that live on the substrate so that the existence or nonexistence can provide a general overview of the condition of the waters of the river, especially Cihideung River. The purpose of this study to know the community who live in River makroavertebrata Cihideung and describe Cihideung River water quality so as to determine the level of river health using a community Cihideung makroavertebrata as bioindikator. The research was conducted in August-October 2008, at four observation stations. Determination of the station based on land use around an aquatic environment Cihideung River. To find out the types of electric makroavertebrata using a microscope, and for water quality analysis conducted at the Laboratory. To classify the river according makroavetebrata Cihideung used biological indices, namely, LQI (Lincoln Quality Index), FBI (Family Biotic Index), Saprobitas index, and SIGNAL 2 (Stream Invertebrate Grade Number Average Level), for the relationship between the parameters used Pearson Correlation Coefficient and Least Significant Difference test information (LSD). Makroavertebrata Cihideung found in the River consists of 33 genera and 19 families, where not all families are found at every station. Of the four stations acquired health conditions varied waters, where conditions are most healthy station at station 1 with a color that is still quite clear waters, the area around the river pristine. Based on biological indices station 1 is quite good and the quality of still waters in accordance with quality standard PP.No 82, 2001. Based on biological indices obtained Cihideung River water conditions included into the waters in moderate to good, with the most appropriate biological indices for Cihideung River is SIGNAL 2.