70 
MPNTF Surface 
MPNTF Surface 
^ *■ * $ * ^ 1: V* * * 
: * 
t 
E 
* S: 
i ■ i 11 1 ■ ■ i ■ 'i 11 1 1 ■ r ■ i 11 1 ■ > i" i " i' ■ i " .' 1 1 ■ ■ i 
85 8P 87 88 W 30 ‘.>1 '» W *. 96 9? S6 99 00 01 0 / 
- 0 
U) 
1 O 
2 l* 
<=*■• to 
It 
i ° 
II 
Year 
MPNTF Bottom 
MPNTF Bottom 
»8687S8 89 9O9196>*)M9S96 9?SeW00(»10i 
Year 
Year 
PMKTF Surface 
PMKTF Surface 
»KI?«e 89 !»yl« 9 S»IS 6 « 97 ueMINI) 1 <b 
Year 
Year 
PMKTF Bottom 
PMKTF Bottom 
Figure VI-1. Time series plots of ambient dissolved oxygen concentrations (mg liter 1 ) and calculated dissolved 
oxygen saturation concentrations (mg liter 1 ) and resultant calculated dissolved oxygen deficit (saturation 
concentration minus ambient concentration) in surface and bottom waters of the tidal fresh segments of the 
Mattaponi (MPNTF) and Pamunkey (PMKTF) rivers. 
Source: Chesapeake Bay Water Quality Monitoring Program database, http://www.chesapeakebay.net/data 
chapter vi 
Guidance for Deriving Site Specific Dissolved Oxygen Criteria 
