According
to the USACE web site,
During
August, 21 of the 27 water quality sampling sites had sufficient water for
sampling. TSS values averaged 8 mg/L and TP values averaged 85 ppb. In April, the last time
the same 21 sites were sampled, mean TSS was 60 mg/L
and mean TP was 175 ppb. No nearshore
bloom formation was observed during a helicopter flight on August 29 that
covered most of the lake shoreline. Data from the August bloom buster
survey are not yet available.
In
the littoral zone, spikerush (Eleocharis)
is germinating in scattered clumps along the west wall. About 50-100
acres of this species have become established in < 1’ of very clear
water. This species provides habitat for fish and wildlife.
Approximately 10,000 acres of torpedograss have
been treated this summer. No regrowth was reported
at six sites that were treated this year and at two sites that were treated in
2006. Dominant vegetation at these sites included beakrush
(Rhyncospora) and sedges. One site
treated in 2005 had <25% control and contained abundant torpedograss.
Two other sites had >95% control and were dominated by desirable wetland
species including buttonbush (Cephalanthus), maidencane (Panicum),
arrowhead (Sagittaria) and water lily (Nymphaea) as well as some upland weeds.