67 
describing any information that was pertinent to the assessment and possible expla¬ 
nation of why a segment passed or failed. 
GUNOH 
The Gunpowder was very close to meeting its SAV goal (2392.1 out of 2432) for 2004, 
so it was relatively easy to obtained the 99.75 water clarity acres needed to pass. 
SEVMH 
The Severn was assessed for the year 2002. During the inception of the DATAFLOW 
program in 2001 and 2002, the data on the Severn and Magothy Rivers were 
collected twice monthly from April through October. Most passing water clarity was 
observed at the southern shore near the mouth and the SAV margin areas in the 
vicinity of Round Bay. 
MIDOH 
Middle River was assessed with DATAFLOW data for 2004. In all three years of 
DATAFLOW assessment, cruise tracks were only conducted within the Middle River 
proper. The MIDOH segment however also encompasses Seneca Creek and part of 
the main-Bay to the north. During the interpolation process, water clarity acres were 
not extrapolated into the unsampled areas of Seneca Creek. This therefore meant that 
a smaller assessment area was used to try and obtain the goal for the entire segment. 
Using this method resulted in a failure of the threshold. If the water clarity pass/fail 
percentage was extrapolated to the entire shallow-water area of the segment, the 
segment would pass. 
MAGMH 
Unlike the Severn, the relatively large shallow areas at the mouth of the Magothy 
continuously failed the criteria in 2002, resulting in failure for the entire segment. 
Perhaps the orientation of the Magothy makes it more vulnerable to open Bay wave 
action and Susquehanna turbid outflow. 
CHSMH 
It should be noted that the 2004 assessment for the lower Chester relied on data from 
two separate cruises for each month. These cruised were interpolated separately. The 
general demarcation line between the two cruises was just south of the Corsica River. 
CHSMH was only at 25% of its SAV goal of 2928 acres and was therefore difficult 
to consistently obtain the large area of water clarity needed for it to pass. 
EASMH 
Eastern Bay was assessed for 2004 and only had 16.7% of its 6209 acre goal. It 
therefore had to achieve an enormous acreage of 12923.5 acres of combined acreage 
to pass. It did very well, achieving an average of 9228 acres, but not enough to pass. 
appendix f • Chesapeake Bay Water Clarity Attainment Results 
