The Biscuit Brook and Neversink Reservoir watersheds: Long‐term investigations of stream chemistry, soil chemistry and aquatic ecology in the Catskill Mountains, New York, <scp>USA</scp> , 1983–2020

This data note describes the Biscuit Brook and Neversink Reservoir watershed long-term monitoring that includes: 1) stream discharge, (1983–2020 for 1937–2020 watershed), 2) water chemistry, 1983–2020, at 4 stations, 3) fish survey from 16 locations in 1990–2019, 4) soil chemistry 2 headwater sub-watersheds, 1993–2012 5) periodic sampling 364 throughout watershed, 1983–2020. The Catskill Mountains of New York, USA drains an area 172.5 km2. feeds one six reservoirs York City's West Hudson supply, which accounts about 90% city's supply. is a 9.63 km2 tributary sub-watershed within watershed.