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Ashokan Reservoir Monitoring Plan

Water Quality Monitoring Plan

(Ashokan Watershed - Release Channel Operations)

Monitoring Objective
  • To monitor water quality in the Lower Esopus Creek (LEC) and other locations in support of
    operation of the Ashokan Release Channel
Monitoring Sites
  • Condition: Normal - Release Channel Not Operating (Routine monitoring conducted at
    these sites, regardless of reservoir spill status)
    • Upper Esopus Stream Site
      • Esopus Creek (E16i) - last sampling point prior to entry into Ashokan Reservoir
    • Limnology Sites
      • Ashokan Reservoir Limnology Stations (1EA-4EA) - multiple depths in water
        column, both basins
    • Keypoint Sites
      • Ashokan Upper Gatehouse - water at the east and west basin intake levels as
        follows:
        • ES - East Surface
        • EM - East Middle
        • EB - East Bottom
        • WS - West Surface
        • WM - West Middle
        • WB - West Bottom
      • Ashokan Effluent Sampling Station (EARCM) - final effluent leaving Ashokan
        via Catskill Aqueduct
  • Condition: Release Channel Operating - In addition to sites listed above, add these sites:
    • Ashokan Release Channel (M-1) - water released through the release channel to the
      lower Esopus Creek
    • Lower Esopus Stream Sites
      • Lower Esopus Creek Above Sawkill (LEC AS) - above confluence with Sawkill
        Creek
      • Lower Esopus Creek at Saugerties Beach (Saugerties Beach) - above Saugerties
        dam
  • Condition: Release Channel Operating & Ashokan Spilling (In addition to sites listed
    above, add these sites:
    • Lower Esopus Stream Sites
      • Ashokan Spill (ASP) - Ashokan Reservoir spill channel below spillway
      • Lower Esopus Creek Confluence (ASP M-1 CONF) - below confluence of
        Ashokan Reservoir release channel release flow and Ashokan Reservoir spill
        channel
Monitoring Frequency and Analytes
Condition: Normal - Release Channel Not Operating
(Routine monitoring at these sites)
Site Type Sites Analytes Frequency
Upper Esopus Creek E16i

Turbidity, temperature
Total suspended solids

Weekly
Monthly
Limnology 1EA-4EA Turbidity, temperature
Total suspended solids
2x/Month
Monthly
Keypoints EARCM Turbidity, temperature
Total suspended solids
5Days/Week
Monthly
Keypoints ES, EM, EB,
WS, WM, WB
Turbidity, temperature Weekly
Condition: Release Channel Operating
(In addition to sites listed above, add these sites)
Site Type Sites Analytes Frequency
Keypoints M-1 Turbidity
Turbidity, temperature,
total suspended solids
Weekly
Monthly
Lower Esopus Creek LEC AS,
Saugerties Beach
Turbidity, temperature,
total suspended solids
Weekly
Condition: Release Channel Operating & Ashokan Spilling
(In addition to sites listed above, add these sites)
Site Type Sites Analytes Frequency
Lower Esopus Creek ASP, ASP M-1 Conf Turbidity, temperature, total
suspended solids
Weekly

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  • Bureau of Water Resource Mgmt
    Division of Water
    NYSDEC
    625 Broadway
    Albany, NY 12233-3508
    518-402-8086
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