A Day in the Life of the Hudson River

"Snapshot Day" October 12, 2005


hurricane sampling in bus
General Note: Snapshot Day Participants 2005 faced residual effects of Hurricane Tammy as they collected data. Weather conditions ranged from wet to wetter. Driving rains dumped inches of rain throughout the Hudson Estuary. Piermont area (image above) received 3.9 inches of rain during the day and Manhattan received 4.26 inches of rain, a record rainfall amount for one day according to the National Weather Service. Flood Watches were in place for much of the participating area.

In some instances participants had shelters where they could huddle and perform test. In other areas they used school buses as a base of operations (Mahopac HS image). Still others ran quick tests in the driving rain and headed home. A few schools unfortunately had to cancel their involvement and are looking forward to next year.

While the data collection was less comprehensive in some locations than in prior years due to the poor weather conditions, dedicated students, teachers and environmental educators did a remarkable job of gathering baseline information in all reaches of the estuary. The rainy conditions actually offer a unique set of factors which can be used in data examination:

  • Examining how temperatures changed, both air and water during the course of the day. Did they change together? Did one change more rapidly than the other? Why or why not?
  • What happened with Dissolved Oxygen in some reaches of the river?
  • What was turbidity like in the river system?
  • What happened to salinity levels, and the salt front, which had been recorded at RM 71.6 on 10/1/05.

These and other questions make this year's data interesting to consider.

*Most files saved as word, and pdf documents; Sites/Participants is pdf; Chlorophyll and Sediment Samples are linked web pages.

Master excel file (xlsx) Files By Topic (pdf) Site Names/Locations Files by Site (word) Files by Site (pdf)
Combined excel file Sites & Participating Groups Troy NY - Junior Museum/Heatly School RM 151 RM 151
Files By Topic (word)
Files By Topic (pdf)
Stuyvesant Landing - Columbia County Soil & Water RM 127 RM 127
Dissolved Oxygen Dissolved Oxygen Nutten Hook, Stuyvesant - Columbia Land Conservancy RM 124 RM 124
pH pH Coxsackie - DEC Five Rivers RM 123 RM 123
Phosphates Phosphates Cohotate Preserve, Athens - Greene County Soil & Water RM 115 RM 115
Nitrates Nitrates Saugerties Light House, Woodstock Day School RM103 RM 103
Alkalinity Alkalinity Ulster Landing Park, Ulster - EMC RM 97 RM 97
Salinity Salinity Esopus Meadows Environmental Center, Esopus - Clearwater RM 87 RM 87
Physical Factors Physical Factors Norrie Point, Staatsburg - HRNERR RM 85 RM 85
Tides Tides Waryas Park - Poughkeepsie, Mid-Hudson Children's Museum RM 76 RM 76
Currents Currents Long Dock, Beacon RM 61E RM 61E
Shipping Shipping Newburgh Landing, Newburgh RM 61W RM 61W
Weather Weather Kowawese Park, New Windsor RM 59 RM 59
Fish Fish Verplanck - Mahopac High School RM 41 RM 41
CPUE (Fish Count Per Unit of Effort) CPUE (Fish Count Per Unit of Effort) Piermont Pier, Lamont-Doherty Earth Observatory RM 25 RM 25

Hudson River Museum


RM 19E
Sediment Samples   Alpine Boat Basin, Tenafly Nature Center RM19W RM 19W
    Beczak Environmental Center, Yonkers RM 18 RM 18
    Inwood Park, NY Park Rangers RM 15 RM 15
    Swindler's Cove, New York Restoration Project RM 13 RM 13
    79th Street Boat Basin, Manhattan - Metro Montessori School RM 6 RM 6
    Christopher Street Pier - New York City Soil & Water RM 4 RM 4
    Manhattan - The River Project RM 2 RM 2
    Gowanus Canal - Urban Park Divers RM0 RM 0

Back to main page