According
to the USACE web site,
June
water-quality monitoring results are now available. Thirteen of the 25
monitoring stations had sufficient water for sampling. Total P averaged
80 ppb lakewide (compared to 185 ppb in May) and 25
ppb at nearshore stations (compared to 52 ppb in
May). Total suspended solids (TSS) averaged 22 ppm lakewide (compared to 68 ppm in May) and 4 ppm
at nearshore stations (compared to 14 ppm in May).
The
monthly submerged-aquatic-vegetation (SAV) survey was
completed yesterday. Twenty-seven sites had sufficient water for
sampling, and all sites had water clarity conducive to plant growth (secchi depth > 50% of total depth). The macroalga Chara remains
the dominant SAV species and was found at 12 of the
27 sites. The vascular SAV species Vallisneria americana
was present 7 of the 16 sites sampled near the northern and western shorelines
but continues to be absent in the south (11 sites sampled). For the first
time in over a year, the southern naiad (Najas
guadalupensis) was found in very low density in
the southern region (west side of Ritta