Presets:
Epilimnion (Surface)
-- mg/L
Thermocline Strata
-- m
Benthic Layer (Bottom)
-- mg/L
Dissolved Oxygen Depth Curve (mg/L)
0.0 - 10.0 mg/LOxygen Thresholds
Normoxic:
> 5.0 mg/L
Stress Zone:
2.0 - 5.0
Hypoxia:
< 2.0 mg/L
Severe Anoxia:
< 0.5 mg/L
Ecological Status
Severe Hypoxia
Dead Zone active below 14 meters depth. Benthic organisms severe mortality.
Surface DO
8.1
mg/L
Sat: 98.4%
Benthic Bottom DO
0.8
mg/L
Depletion: Critically Low
Fish Habitat Viability
22%
Safe Area
Microbial Respiration
1.35
mg/L/day
Driven by decomposition demand
Environmental Parameters
26.5 °C
16.0 °C
4.2 ppm
2.1 m/s
25 m
Biogeochemical Mechanics
1. Gas Solubility: Warmer surface waters hold less dissolved oxygen ($O_2$) based on Henry's Law approximations.
2. Stratification & BOD: Thermal gradients prevent oxygen diffusion from surface to benthic layers, while microbial decomposition consumes oxygen faster than reaeration rates.