Comparative Limnology & Hydrogeochemistry of Owasco Lake/Watershed

Bi-Monthly Nutrient Loading Survey 2006 & 2007

• Initiated in 2006
• Up to Eleven Lake Sites, collecting:
  • SeaBird CTD Cast - Conductivity, Temperature, Light Transmission vs. Depth
  • Horizontal & Vertical Plankton Tows & Abundance Enumerations
  • Secchi Disk Depth
  • Surface & Bottom (few meters above lake floor) Water Samples analyzed for:
    • Total Coliform and E. coli bacteria (only in 2005)
    • Total Phosphates
    • Dissolved Nutrients (Phosphates, Nitrates, & Silica)
    • DO, pH, Conductivity (Specific Conductance)
    • Chlorophyll a
    • Total Suspended Solids
    • Major Ions (Cl, SO4, Na, K, Ca, Mg by IC) & Alkalinity (by titration)
• Up to Seven Tributary Sites, collecting:
  • Stream Discharge
  • Temperature, pH, Dissolved Oxygen, Conductivity
  • Grab Sample analyzed for:
    • Total Phosphate
    • Dissolved Nutrients (Phosphates, Nitrates, & Silica)
    • Total Suspended Solids
    • Major Ions (Cl, SO4, Na, K, Ca, Mg by IC) & Alkalinity (by titration)

Lake Sites & Water Depths: (Larger Map)

Stream Sites: (Larger View)

2006 Data:

• Summary: A Preliminary Water Quality Study of Owasco Lake, NY and its Watershed. Halfman, Holler & Philip, 2007.
• Average Data: 2006 Average Lake & Watershed Data
• Emerson Park & Owasco Lakefront Owners Talk, Summer 2007: pdf version

2007 Data:

• Summary: Water Quality and Nutrient Sources in the Owasco Lake Watershed, New York: . Halfman & O'Neill, Dye, 2010.
• Average Data: 2007 Average Lake & Watershed Data
• Emerson Park & Owasco Lakefront Owners Talk, Summer 2008: pdf version

2008 & 2009 Data:

• Summary: Owasco Lake, New York: Water Quality and Nutrient Sources. Halfman, Brown, Ware, O'Neill, Dye, and Franklin, 2009.
• Average Data in the report.
• Owasco Lake Day Talk, Summer 2010: pdf version

2010 Data & Reports:

• Watershed Summary: Water Quality & Nutrient Sources in the Owasco Lake Watershed: A 2010 Update. J.D. Halfman & K.F. O'Neill
• Lake Summary. Owasco Lake: A 2010 Update. J.D. Halfman
• Owasco Lake Day Talk, Summer 2010: pdf version
• Conesus Lake Study: Click here.

2011 Data & Reports:

• Watershed Summary: OWASCO LAKE, NEW YORK: WATER QUALITY &NUTRIENT SOURCES, A 2011 UPDATE
• 2011 Field Sites. All Sites
• Owasco Lake Day Talk, Summer 2011: pdf version

2012 Data & Reports:

• Watershed Summary: OWASCO LAKE, NEW YORK: WATER QUALITY &NUTRIENT SOURCES, A 2012 UPDATE
• 2012 Field Sites. All Sites
• Owasco Lake Day Talk, Summer 2012: pdf version

2013 Data & Reports:

• Watershed Summary: OWASCO LAKE, NEW YORK: WATER QUALITY &NUTRIENT SOURCES, A 2013 UPDATE
• 2013 Field Sites. All Sites
• Owasco Lake Day Talk, Summer 2013: pdf version

2014 Data & Reports:

• Watershed Summary: OWASCO LAKE, NEW YORK: WATER QUALITY &NUTRIENT SOURCES, A 2014 UPDATE
• 2014 Field Sites. All Sites
• Owasco Lake Day Talk, Summer 2014: pdf version

Bedrock, Land Use and Other Maps