Table 12.2 Summary of the protective capacity of different potential criteria derived from 
Yaquina Estuary percentile data. Depth (below MLLW) to which these potential criteria 
permit long-term seagrass persistence and a narrative description for each case and zone. 
Percent change is relative to the median case. 
Case 
Zone 
Protective Capacity 
Depth, m 
% change 
1 
(Median) 
1 
>2 
0 
Present Condition 
2 
>0.5 
0 
2 
(25 th %) 
1 
>3 
+38 
Most Protective 
2 
>1 
+41 
3 
(75 th %) 
1 
>2 
0 
Least Protective 
2 
0 
-48 
Newport 
1 1 Z. marina 
Zone 1 
L- . J 0.2 - -2.0m 
□ < -2.0m 
4 " 5 km 
4" 10 km 
0.2- -0.5m 
< -0.5m 
Zone 1: 
Marine 
Dominated 
Zone 2: 
/ 
Ri\erine 
/ 
Dominated 
/ 
/ 
+ 15 km 
Figure 12.1 Observed eelgrass distribution (yellow cross-hatch) and simulated eelgrass (green) depth 
distribution based on the median case. Brown regions are unsuitable for eelgrass survival. 
Inset boxes show that the median case should maintain current eelgrass distribution in both 
Zones 1 and 2. 
92 
