 The reservoir holds of water at full capacity, and has a drainage basin of .The Bog Brook Reservoir is one of 12 reservoirs in the Croton Watershed.From the East Branch Reservoir, the water flows into the continuation of the East Branch of the Croton River, then into The Diverting Reservoir, then via the Croton River to the Muscoot Reservoir and the New Croton Reservoir, into the New Croton Aqueduct, and finally to the Jerome Park Reservoir in the Bronx for distribution to New York City.