Catskill Aqueduct Repairs

New York City Department of Environmental Protection
Catskill Aqueduct Repair and Rehabilitation (CAT-RR)
Town of Yorktown Progress to Date
May 16, 2019

Background
In the fall of 2018, the City of New York began working on CAT-RR to repair and rehabilitate the Catskill Aqueduct. This complex project includes cleaning the Aqueduct to improve its carrying capacity, repairing leaks, replacing valves, and a full engineering inspection of the century-old structure. The project will ensure the Aqueduct is in a state of good repair for generations to come by ensuring the continued flow of drinking water to 9.6 million New Yorkers.

NYCDEP has worked with the Town of Yorktown to obtain appropriate local permits to conduct the work at thirteen (13) sites within the Town (Town Board Resolution, 9/25/2018; Permit #WP-FSWPPP-T-041-18-NYCDEP), four (4) of which are covered under wetlands permits. 

Work Completed through April 2019
The CAT-RR team has established primary staging areas and primary access roads. As part of this mobilization effort, Storm Water Pollution Prevention Plan measures have been installed and trees removed where necessary. During the first Aqueduct shutdown in the fall of 2018, the CAT-RR project team was able to conduct internal inspections of the Aqueduct and start leak repair and civil rehabilitation work. 

Upcoming Work through December 2019
Over the next six (6) months, the project team will continue to install secondary access roads and start preparing for the fall 2019 shutdown and related in-Aqueduct work. This includes finalizing mechanical and civil rehabilitation work external to the Aqueduct. The work at the four (4) sites in and adjacent to wetlands and watercourses will start during this period. Following the external work, the project team will focus on cleaning and leak repair within the Aqueduct during the fall 2019 shutdown, while finalizing the mechanical and civil rehabilitation.

Work Locations
See the below list and map for CAT-RR locations in the Town of Yorktown.

NYCDEP CAT-RR
Yorktown Work Site Locations

  • Yorktown-1: Accessed from Field Street; includes Peekskill Cut and Cover Tunnel (CCT) Access Manhole with Culvert Drain
  • Yorktown-2: West of Hunter Brook Road, accessed from Jacob Road; includes Hunters Brook Steel Pipe Siphon (SPS) North Chamber and the location of a new boathole
  • Yorktown-2A (wetland): Accessed directly from White Hill Road; includes the Hunters Brook Steel Pipe Siphon (SPS) Access Manholes and Hunters Brook SPS Blow-off Chambers
  • Yorktown-3: Located east of Hunter Brook Road; includes the Hunters Brook SPS South Chamber
  • Yorktown-3A: Accessed from Baptist Church Road; includes the Yorktown CCT Access Manhole and Yorktown CCT Access Manhole with Culvert Drain
  • Yorktown-4: Accessed from Baldwin Road includes an additional Yorktown CCT Access Manhole with Culvert Drain
  • Yorktown-5: Accessed from Underhill Avenue; includes the Yorktown CCT Access Manhole, a new boathole, and Turkey Mountain SPS North Chamber
  • Yorktown-6 (wetland): Located within the median of the Taconic State Parkway, accessed from the northbound lane; includes the Turkey Mountain SPS Blow-off and Turkey Mountain SPS Access Manholes
  • Yorktown-7: Accessed from Chapman Road leading to the Croton Lake Pressure Tunnel (PT) Downtake Chamber; includes the Turkey Mountain SPS South Chamber
  • Yorktown-8: Accessed through Yorktown-7 from Chapman Road; includes the Croton Lake PT Downtake Chamber and Croton Lake PT Blow-off and Waste-Gate Chamber
  • Yorktown-9: Accessed from Croton Dam Road; includes the Croton Lake PT Uptake Chamber, Croton CCT Boathole, Leak 7, and Croton CCT Access Manhole
  • Yorktown-10 (wetland): Accessed from Kitchawan Road; includes the Kitchawan CCT Access Manhole with Culvert Drain
  • Yorktown-11 (wetland): Accessed from Pines Bridge Road; includes the Kitchawan CCT Access Manhole

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