Smyrna 
Elementary School
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The Effect of Trawling on the Estuary
Duke/Smyrna School Partnership

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Fall 2001 Data
 Water Chemistry

Sleepy Creek/Straits Open

Midden's Creek Open

Sleepy Creek Closed 

Midden's Creek Closed
 

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John reads GPS.

A Smyrna student 
writing down information .

 

Sleepy Creek/Straits Open Water Chemistry
Date Site# Surface D.O.
(ppt.)		 Bottom D.O.
(ppt.)		 Salinity
(ppt.)		 Temp
C 		 Water Depth
(m)		 Secchi Depth
(m)
10/29/01 1-O 7.47 7.47 34.0 13.3 1.94 1.94
10/29/01 2-O 9.01 9.01 33.7 13.3 - -
10/29/01 3-O 7.70 7.72 33.4 - 1.03 1.03
10/29/01 4-0 7.74 7.67 33.6 - - -
10/29/01 5-O 7.78 8.6 33.6 13.5 1.18 1.18

Average

 7.94 8.1 34.7 13.4 1.38 1.38

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Sleepy Creek Closed Water Chemistry
Date Site # Surface D.O.
(ppt.)		 Bottom D.O.
(ppt.)		 Salinity
(ppt.)		 Temp.
C 		 Water Depth
(m)		 Secchi Depth
(m)
 10/29/01 6-C 8.31 8.35 33.6 13.3 1.04 1.04
10/29/01 7-C 8.39 8.38 34 13.4 1.5 .95
10/29/01 8-C 8.41 8.5 33.4 13.4 1 1
10/29/01 9-C 8.59 8.94 33.8 13.7 1 1
10/29/01 10-C 9.25 9.17 33.8 13.8 No Data 1.09

Average

 8.59 8.668 33.72 13.52 1.1 1.016

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secchi.jpg (53224 bytes)

John 

Jared and Fred find 
the secchi depth.

 

Midden's Creek Open Water Chemistry 
Date Site Number Surface D.O.
(ppt.)		 Bottom D.O.
(ppt.)		 Salinity
(ppt.)

Temp.
C

 Water Depth
(m)		 Secchi Depth
(m)
11/02/01 1-MO 7.31 6.95 31.1 16.7  1.68 1.48
11/02/01 2-MO 7.23 6.91 31.2 16.6 2.3 1.5
11/02/01 3-MO 7.07 6.29 31.0 16.4 1.68 1.17
11/02/01 4-MO 7.09 6.34 31.0 16.4 2.4 1.46
11/02/01 5-MO 6.94 6.92 30.9 17 2.6 2.6

Average

 7.128 6.682 31.04 16.62 2.132 1.642

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Midden's Creek Closed Water Chemistry 
Date Site # Surface
 D.O.
(ppt.)		 Bottom D.O.
(ppt.)		 Salinity
(ppt.)

Temp.
C

 Water Depth
(m)		 Secchi Depth
(m)
11/02/01 6-MC 7.17 7.37 31.1 19.0 .8 .8
11/02/01 7-MC 7.54 7.70 31.3 19.1 .95 .95
11/02/01 8-MC 7.10 7.42 30.9 18.7 1.08 .96
11/02/01 9-MC 7.26 7.17 31.8 19.1 0.9 .5
11/02/01 10-MC 7.12 7.16 31.8 19.5 1.0 .85

Average

 7.24 7.36 31.4 19.1 .95 .80

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