Mahogany Tide (Prorocentrum minimim) was detected on April 20 throughout the upper St. Martin Creek (3 stations ranging from 5,800-24,000 cells/ml). The results correlated with the initial data record for high fluctuations in chlorophyll and dissolved oxygen in the region. Abundances are above threshold levels of 3,000 cells/ml for possible living resource impacts as indicated by EPA Chesapeake Bay criteria document (2003). Chlorophyll levels this week in Bishopville Prong of the St. Martin system are peaking daily at levels over 100 ug/L likely tied to expanded blooms in that area. Dissolved oxygen levels are fluctuating daily to over 15 mg/L with over 200% saturation at times during the last week. Please check Maryland Department of Natural Resources Eyes on the Bay website for the most recent water quality conditions in Bishopville Prong.