PROMAB (Program for Environmental Monitoring in Microbasins), as one of IPEF's cooperative programs, is a research program coordinated by the Forest Hydrology Laboratory of the Department of Forest Sciences at ESALQ/USP. Altogether, the program currently has 18 experimental watersheds, 10 of which have planted eucalyptus forests, 03 watersheds with planted pine forests, 4 experimental watersheds with native forest and 01 with pasture. Each project is coordinated, maintained and analyzed individually. Thus, the data collected in the microcatchment or in the experimental microcatchments of a given participating company are analyzed and stored in a database management system, located on the IPEF server, and are made available to the company in the form of a report. The global results of the set of microbasins also allow hydrological analyzes aimed at identifying similarities, trends and behaviors of the relationships between the management of planted forests and water, in terms of quantity (water consumption by planted forests) and quality (hydrological impacts of management activities), as well as an indication of the hydrological similarity of the different regions. The beginnings of PROMAB were research projects by the Laboratory of Forestry Hydrology, Department of Forest Sciences at Esalq/USP, the first of which was installed in 1987, in two experimental watersheds located in areas of what was then FLORIN Reforestation Integrated (today Fibria Celulose SA), at Fazenda Bela Vista, Municipality of Santa Branca, in Vale do Paraíba, SP. Over the years, other companies have joined the program, gradually increasing the number of experimental watersheds.