Walkers Point
Sondes were swapped this week on the morning of June 2nd. Overall, the water quality at Walkers Point was good this week. Weather conditions included light rain events this week, with 0.26 inches of precipitation recorded at T.F. Green. Surface salinity averaged 18.0 ppt and ranged from 8.7 ppt to 26.5 ppt. At the bottom, salinity averaged 26.5 ppt and ranged from 21.4 ppt to 30.2 ppt. Temperatures averaged 19.3°C at the surface and 16.6°C at the bottom. Surface temperatures ranged from 14.7°C to 24.2°C, while bottom temperatures ranged from 14.3°C to 20.5°C.
Dissolved oxygen (DO) at Walkers Point remained above the hypoxia threshold (i.e., DO>2.9mg/L) at the surface and bottom depths. Surface DO averaged 9.7 mg/L and ranged from 6.1 mg/L to 17.9 mg/L. Bottom DO concentrations averaged 5.8 mg/L and ranged from 3.6 mg/L to 9.4 mg/L. Chlorophyll readings averaged 10.87 µg/L at the surface and 3.8 µg/L at the bottom. Maximum chlorophyll at the surface reached 51.51 µg/L on the evening of June 7th.
Bullock Reach
Overall, water quality was good at Bullock Reach this week. Salinity averaged 28.3 ppt, 29.9 ppt, and 31.9 ppt at the surface, middle, and bottom sondes, respectively. Surface salinity ranged 26.2 – 29.6 ppt, middle salinity range 27.6 – 31.3 ppt, and bottom salinity ranged 30.4 – 32.7 ppt. Surface temperature averaged 17.9°C and ranged from 14.6°C to 21.2°C. Middle temperature averaged 17.1°C and ranged from 14.3°C to 20.6°C. Bottom temperatures averaged 15.1°C and ranged from 13.9°C to 18.0°C. Dissolved oxygen (DO) at Bullock Reach remained above the hypoxia threshold (i.e., DO >2.9 mg/L) throughout the week. Surface DO averaged 9.67 mg/L and ranged 7.49 – 12.74 mg/L. Middle DO averaged 8.66 mg/L and ranged 6.4 – 10.67 mg/L. At the bottom, DO averaged 6.34 mg/L and ranged 4.99 – 8.48 mg/L. Chlorophyll readings ranged from low to elevated throughout the week. Readings averaged 12.53 µg/L at the surface, 11.00 µg/L at the middle, and 4.63 µg/L at the bottom. The maximum surface chlorophyll was 45.58 µg/L on the afternoon of June 7th.