NYS Department of Environmental Conservation
Whole Lake
Aquatic Herbicides-Yaphank Lakes
•Impact on
Target Plant Species- fluridone-
fanwort high, milfoil moderate
2,4-D
– milfoil high, fanwort low
•Impact on
Native Plant Species-
–Lower Lake fluridone-low, 2,4D-moderate
–Upper Lake fluridone-moderate,
2,4-D-low
•Impact on
Native Animal Species- no
expected loss
•Post-Treatment
Plant Coverage
–treatment
zone- Lower Lake-low, Upper
Lake-moderate
–outside
treatment zone- Lower
Lake-low, Upper Lake-moderate
•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- fluridone-
low YOT, low YAT
2,4-D-
low YOT, moderate YAT
•Recreational
Impacts During Treatment none
expected
•Likelihood of
Suboptimal Results low to
moderate