The role of local institutions in carrying out the restoration of mangrove forests in the city of Surabaya is required a very close cooperation among all the stakeholders involved. To achieve the required success, is needed co-management approach based on community participation. The mangrove forest in Wonorejo suffers from degradation because of anthropogenic factors, even though mangrove forests serve to row as a protection from coastal erosion, as a stabilizer shoreline, filter and trap pollutants, as the breeding ground, as well as the area of foraging various types of fish and shrimp. The data shown that the extent of mangrove areas Wonorejo area is 480 hectares or 0.74% of the area of the city of Surabaya. In 2012, the mangrove areas were damaged area of 288 hectares from 480 hectares. The cause of damaged mangroves for the construction of a residential area is very intensively every years. The water's quality shown that there is contamination due to domestic waste. So that turbidity, suspended solids, phosphate, nitrate and total coliform have exceeded environmental quality standards. The environmental impact is a reduction in marine catches by fishermen. It is estimated that fish catch is only reach 25-30 kg per day, whereas five years ago marine catches reached 80-90 kg per day. Restoring mangrove degradation and its phytoremediation capability to absorb water pollution is required not only technical factors for improving mangrove condition, but also the most important is the institutional factors.
