NYS Department of Environmental Conservation
Partial Lake
Aquatic Herbicides-Yaphank Lakes
•Impact on
Target Plant Species- endothal-
fanwort high
triclopyr
– milfoil high
diquat-moderate
•Impact on
Native Plant Species-
–Lower Lake endothal-high, triclopyr-low,
diquat-high
–Upper Lake endothal-high, triclopyr-low,
diquat-high
•Impact on
Native Animal Species- no
expected loss
•Post-Treatment
Plant Coverage
–treatment
zone- Lower Lake-low, Upper
Lake-moderate
–outside
treatment zone- both lakes-
unchanged
•Water quality
changes no expected
changes
•Ecological
impacts habitat disruption
in treatment zone
•Downstream
impacts sub-lethal impacts
normal-high flow
none
likely under low flow
•Potential for
regrowth
–within treatment zone- endothal-
moderate YOT, high YAT diquat-
low YOT, moderate YAT
triclopyr-
low YOT, moderate YAT
•Recreational
Impacts During Treatment none
expected
•Likelihood of
Suboptimal Results low to
moderate