Twadell Brook

Twadell Brook
Location
CountryUnited States
StateNew York
Physical characteristics
Source 
 • locationDelaware County, New York
MouthBeaver Kill
 • location
East Branch, New York, Delaware County, New York, United States
 • coordinates
41°59′08″N 75°07′13″W / 41.9856°N 75.1202°W / 41.9856; -75.1202

Twadell Brook is a stream or tributary located in Delaware County and flows into the Beaver Kill watershed by East Branch, New York. [1] This basin is known for its surficial geology and base-flow characteristics, which contribute to its importance as a freestone trout and cold-water stream system. [2]

Twadell Brook has been identified in New York State Natural Heritage Program and DEC species assessments as a site where the brook floater (Alasmidonta varicosa) has been documented or considered in regional surveys. This freshwater mussel is of conservation concern, which highlights the brook's ecological value for supporting sensitive freshwater fauna. [3]

Streamflow measurements are not continuously taken directly on Twadell Brook because it is a small, unmonitored tributary. Instead, hydrologic monitoring and streamflow statistics for the region are reported at Beaver Kill and other nearby basin gauging sites.[4]

References

  1. ^ "Geographic Names Information System". edits.nationalmap.gov. Retrieved 2025-11-19.
  2. ^ Hydrogeology of the Beaver Kill Basin in Sullivan, Delaware, and Ulster Counties, New York (Report). US Geological Survey. 2000.
  3. ^ New York State Department of Environmental Conservation. Species Status Assessment: Brook floater (Alasmidonta varicosa). July 15, 2025. Albany, NY: NYS DEC. Available at https://extapps.dec.ny.gov/docs/wildlife_pdf/sgcnbrookfloater.pdf
  4. ^ "U.S. Geological Survey — Current Water Data for New York / NWIS". waterdata.usgs.gov. Retrieved 2025-11-19.