Download Snapshot Day 10/18/11 Data (Salt Front RM 35.7 RIVER MILE 25W Piermont Pier

Snapshot Day 10/18/11 Data (Salt Front RM 35.7 RIVER MILE 25W Piermont Pier Margie Turrin & 5 Lamonters, Lamont-Doherty Earth Observatory Sonia Cairo, Keep Rockland Beautiful Kathy Galione, Rockland County Americorps Latitude N 41 degrees 02’590 Longitude W 73 degrees 53’789

Tom Mullane, Jo Mosella, Eileen McCaffrey– Pearl River HS APES – 24 students

Ellen Pollina, Pat Kilkelly, Tappan Zee HS – AP Bio – 25 students

Jen Mazza,– Clarkstown South High School – 15 IB Env. Sci. Location: Piermont Pier, Piermont NY Area: Man made fishing/shipping pier at the east end, long pier with paved roadway and vegetation along both sides Surrounding Land Use: Urban/residential 80% , Forested 20% Sampling Site: Pier, roadway in center of whole pier, parking area at end, Plants and trees along side. Shoreline Rip Rap, collected wood in area and piping entering river on the South of sampling site

Plants in area: some plants in the water but lots of plants along pier & lots of water celery washed up on shore Water depth: Varied by location on the pier and by tide River Bottom – sandy/rocky bottom with marsh grass growing in or near the water Plants in area: sumac 30%; marsh plants 70%; reeds & cattails ITEM

Time

Reading 1

Physical Air Temperature

9:15AM

14C

9:50 AM

17C

10:10 AM

17.5C

10:30 AM

20C

10:56 AM

21C

11:30 AM

24 C

12:20 PM

21.5 C

1:05 PM

26 C

1:29 PM

23.5 C

Wind Speed

Time

Anenometer

Description

Very windy

9:15 AM

Beaufort # & Direction 1 - Sw

Weather recently Water Temperature

Comments

1.1 knots

Mostly Cloudy, light drizzle 9:50 AM 1 - SW 1.1 knots 30% Cloud cover, no rain 10:10AM 1 – SW 1.0 knots 70% cloud cover, no rain 10:30 AM 1 - SW 2.5 knots Partly Cloudy, no rain 10:56 AM 1 - SW 2.9 knots Partly Cloudy, no rain 11:30 AM 1 - SW 2.2 knots 25% Cloudy, no rain 12:20 PM 1-S 2 knots Clear, no rain 1:05 PM 1-S 1.2 knots Clear, few scattered clouds, no rain 1:29 PM 1-S 2.4 kts. Clear, no rain Some small amount of rain last few days, mainly nice weather Average 9:45 AM 10:20AM 11:00AM

16C 16C 17C

17C 18.4 C 19C

16.5C 17.2C 18.5C

Turbidity –

Chlorophyll

Chemical

DO Drop count

DO

12:20PM 1:15 PM Time 9:14 AM 9:45 AM 10:09 AM 10:34 AM 11:03 AM 11:20 AM 12:30 PM 12:50 PM 1:15 PM 1:33 PM 9:22AM

17C 17C 3 reading 10.4, 11.2, 11.8 8.9, 13.9, 12 16.6, 16, 14.1 16.0, 19, 20 23.2, 25, 20.5 26, 26.9, 21 21.7, 32.5, 30.2 27.4, 25.1, 25.4 30.6, 31.2, 28.6 26.0, 24.0, 25.0 1.0

18C 18.2C Average 11.13 cm 11.6 cm 15.6 cm 18.3 cm 22.8 cm 24.2 cm 28.1 cm 25.9 cm 30.1 cm 25 cm

17.5C 17.6C Long site tube

North side of pier by blockhouse

9:56 AM 1.5 10:15 AM 1.0 10:35 AM 1.0 11:10AM 0.5 11:35 PM 0.5 12:35 PM 1.5 1:02 PM 0.4 1:35 PM 1.5 *Water sampled at surface and at depth with niskin bottle reported in two separate sets of readings below. Depth for bottom samples ranged from 3.4 meters to 4.3 meters SURFACE SAMPLES TIME DO Reading Water Temp % Saturation 9:15AM error 16C 10:10AM error 16.5C 11:00AM error 16.5C 12:00PM 8 mg/L 85% 17C 12:25 PM 10 mg/L 100% 17C 1:05 PM 8 mg/L 85% 18C BOTTOM SAMPLES TIME DO Reading Water Temp % Saturation 9:15AM 9.0 mg/L 87% 14C 10:10AM error 15C 11:00AM 7 mg/L 70% 16C 12:25 PM 9 mg/L 90% 17 C 1:05 PM 9 mg/L 95% 18C

pH

TIME

SURFACE SAMPLES

colorimeter

9:15AM 10:10AM 11:00AM 12:25 PM 1:05 PM

7.3 6.9 7.2 7.3 7.2

Phosphates

TIME

SURFACE SAMPLES

colorimeter

9:15AM 10:10AM

0.2 mg/L 0.24 mg/L

11:00AM 12:25 PM 1:05 PM TIME

0.22 mg/L 0.17 mg/L 0.06 mg/L SURFACE SAMPLES

9:15AM 10:10AM 11:00AM 12:25 PM 1:05 PM TIME

0.2 mg/L