Fig. 8. Soluble reactive phosphorus (SRP) concentrations and stream flow for samples collected during successive winters (January, February, and March) in the Sandusky River, 1975–1992.
Fig. 8. Soluble reactive phosphorus (SRP) concentrations and stream flow for samples collected during successive winters (January, February, and March) in the Sandusky River, 1975–1992.