The flow on the release channel will increase from 15 MGD to 120 MGD between 9:00am and 1:00pm today, Wednesday, July 16th. This is a result of recent rainfall that has seen a rise in Ashokan Reservoir levels above the seasonal storage objective which for today is 98.6%. Releases are expected to run for several days at this rate given the current forecast.
The current release channel turbidity remains low at 4.7 NTU.
Lomontville USGS gauge is reporting a flow of 64 cfs (41 MGD) and turbidity of 1.8.
Mt Marion NWS Advance Hydrological Prediction Service is reporting a stage of 16.07 and decreasing forecast through Friday night.
The Ashokan Release Channel is being reactivated today at 15 million gallons per day (mgd) for community releases. The current release channel turbidity is 4.4 NTU. Ashokan Reservoir’s east basin is currently spilling over at a rate of 635 mgd. The combined spill and release rate will be maintained below 1000 mgd per the interim release protocol.
The Mount Marion gauge is currently at 16.2 ft river stage and steadily decreasing to 14.9 ft for the forecast period ending May 22 at 8:00am.
The Ashokan Release Channel flow was shut down today from 200MGD to 0MGD at 10:35AM per Interim Release Protocol as combined spill and release had reached 1 BGD.
The release rate from Ashokan Reservoir will be increased from 100 to 200MGD this afternoon in anticipation of higher runoff. The turbidity of the release remains low at 2.6NTU.
The Ashokan Release has been changed from 200MGD to the minimum community release rate of 15 MGD from the west basin. The turbidity of the release is relatively clear at 5.1NTU.
The reservoir storage elevation target for May 1 is 100% and the reservoir is currently at 99.8%. The Catskill Aqueduct diversion is 300MGD from the east basin.
The Ashokan Release will be reduced today to 200MGD to maintain the storage objective for the reservoir which is 98.5%. Current storage is at 98.2%. Turbidity level is low at 4.2 NTU.
The release channel flow will be increased in anticipation of additional forecasted runoff, ramping up to 270MGD by 8pm on April 16th and to 500 MGD by 10:30am on April 17th. The target storage elevation for tomorrow is 97%, and the reservoir storage is currently at 97.8%. The quality of water being released is still relatively good at 5.2 NTU.
NYCDEP will increase flow rate on the Ashokan Release Channel from 10 mgd to 150 mgd today and maintain a draw from the West Basin into the Catskill Aqueduct. This increase is intended to keep reservoir level on target with the CSSO of 95.5% and anticipating a surplus of forecasted inflows. Release rate is expected to stay at 150 mgd through the weekend and will be reevaluated next week. Current storage in the reservoir is 94.3% with a turbidity of 5.1 NTU.
The Draft Scope for the modification of the CATALUM SPDES permit environmental impact statement is available for review at: http://www.dec.ny.gov/lands/79771.html
The Environmental Impact Statement (EIS) will evaluate the potential for significant adverse environmental impacts to occur from implementation of the turbidity control measures proposed to be incorporated into the Catalum SPDES Permit (Turbidity Control Measures).
Written comments on the draft scope will be accepted until the close of business on July 8, 2014. Public scoping session will be held in Ulster County at 3 p.m. and 6 p.m. on May 12, 2014 at the Ulster County Community College Student Lounge, 491 Cottekill Road, Stone Ridge, New York.
Comments can be delivered by hand, or sent by regular mail, commercial delivery service, fax transmittal or email, to the following contact person: Stephen Tomasik, NYSDEC – Division of Environmental Permits, 625 Broadway, 4th Floor, Albany, NY 12233-1750, Phone: (518) 486-9955. Email comments can be accepted at: Ashokan@gw.dec.state.ny.us