This is the third set of Citizen Monitoring Reports covering the period of June 16 to 30, 2017.
- The third week of June was warmer and wetter than normal, while the last week was cooler and drier. Precipitation patterns have become variable due to summer thunderstorms.
- Low Dissolved Oxygen conditions (<4.0 ppm) were widespread in most tributaries and canals. Severely low dissolved oxygen (<2.0 ppm) appeared in some tributaries and reappeared in some canals.
- Accumulations of Nuisance Aquatic Vegetation were generally minor. Major accumulations were seen in several sites the South Bethany canals and in upper Love Creek.
- Total Enterococcus Bacteria (TE) levels were elevated in some upper tributaries and a few bay sites. Rainfall may have contributed to elevated readings.
- Harmful Algae Blooms in the ocean and DE Bay were limited to background concentrations of potentially toxic Dinophysis and Pseudonitzchia. In the estuaries, blooms of potentially toxic Chloromorum and nontoxic Gyrodinium, Pleurochrysis and Navicula were seen in canals and tributaries. Early season blooms of potentially toxic blue-green algae Microcystis and Aphanizomenon persisted in Red Mill Pond and Silver Lake, Rehoboth.
The 2017 Delaware Sea Grant Annual Report-“Putting Science to Work” is available at the following link.