Snapshot Day 10/2/07 Data (Salt Front rm 78. 2) River mile 25e village of Irvington Philip Levine and Irvington’s 5



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Snapshot Day 10/2/07 Data

(Salt Front RM 78.2)

RIVER MILE 25E

Village of Irvington

Philip Levine and Irvington’s 5th grade Main Street School (155 students)

Ben Kwiatkowski and Irvington High School Science Club (15 students)

N 41°, W 73°


Location
: Scenic Hudson Park, Village of Irvington, Westchester County

Area: Beach in the park, covered with vegetation

Surrounding Land Use: Forested 5%, Beach 10%, Industrial Commercial 15%, Open and Grassy 70% (groomed park with ballfields)

Sampling Site: Open and Grassy, Used by people for picnics, ballfields, groomed park. Beach, banks altered, riprap on shore, collected wood & debris in area

Plants in area: less than 25% of entire site has plants in the water

Water depth: 2 to 4 feet

River Bottomrocky bottom, water calm


ITEM

Time

Reading 1

Reading 2

Comments

Physical












Air Temperature

10:15 AM

20C











12:00 noon

25C







Wind Speed

2 knots

North




Cloud Cover













Weather today

partly cloudy in AM to sunny later

Weather recently

A little rain, light wind, temperature in 60s (F)

Water Temperature

9:30

20C




AVERAGE




10:50 AM

26C

22C





24C




11:30 AM

28C

24C


22C




23C




12:30 PM

22C

28C


24C




24.5C
















Turbidity

11:00 AM

59.9 cm




Long site tube




9:45 AM

40 JTU

40 JTU

Short site tubes

Chlorophyll

10:30 AM

0.6







Chemical













DO (drop kit)

10:30

4 ppm

24C

33% saturated

pH

9:45 AM

7.0

8.5


8.0




Average 7.8

Phosphate













Nitrate

11:00 AM

> 50 mg/l







Alkalinity













Salinity

10:45 AM

35ppt

35 ppt


35 ppt




Drop count test kit/test strips

Fish Catch

Number Caught

Species

CPUE

Seine

15ft. long seine/4 ft wide

2

Atlantic Menhaden







5 seines

1

Blue Crab










2

Striped Bass










27

Atlantic Silversides










Many

Comb jellies







Tides

8:30 AM

26 cm




Tide stick #1




9:30 AM

29 cm

Rising







10:15 AM

45 cm

Rising







10:45 AM

60 cm

Rising







11:35 AM

76 cm

Rising







12:00 noon

20 cm

rising

Reset stick #2




12:30 PM

41 cm

rising







1:25 PM

58 cm

rising




Currents

Flood tide close to shoreline – hard to get to main channel
















Traffic

9:21 AM

Tugboat

Northbound

Light




11:21 AM

Barge/pushed by white tug

Southbound







11:25 AM

Barge /pushed by black tug

Southbound







11:30 AM

Barge – black & red

Southbound

















































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