Water Quality Observations 2009 Algae Blooms. Upper River Taste and Odor Reports  Initial report to ORSANCO on June 1, 2009  Complaints from:  Toronto,

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Presentation transcript:

Water Quality Observations 2009 Algae Blooms

Upper River Taste and Odor Reports  Initial report to ORSANCO on June 1, 2009  Complaints from:  Toronto, OH (ORM 59.2)  Weirton, WV (ORM 65.2)  Steubenville, OH (ORM 65.3)  Wheeling, WV (ORM 86.8)  Later confirmed at East Liverpool (ORM 40.2) and Midland (ORM 36)  T&O problems started on May 28.  Weirton reported clear water on June 1.  Beaver Falls, PA water plant reported T&O problems on May 26  Conference call with PA DEP on June 5

Sampling Locations  Samples collected on June 8, 2009  Nutrients (TP, TKN, Nitrate/Nitrite, Ammonia)  Algae community  Dashields L&D (ORM 13.3)  Beaver River (Confluence at ORM 25.4)  Montgomery L&D (ORM 31.3)  New Cumberland L&D (ORM 54.4)  Pike Island L&D (ORM 84.2)  Wheeling Water Plant (ORM 86.8)

Nutrients Sample Results

Algae Sample Results

Lessons Learned and Future Planning  Algae issues are usually very short lived  Response time important  Second time in 3 years we have seen spring time algae issues on the upper river  Preparation for 2010  Sampling kits for water treatment plants  Discussed Hydrolab placement with L&Ds

Microcystis Bloom Middle River  Cincinnati Area (ORM )  September 22- October 5  Contacted Louisville and Huntington Water Plants  Visual observation of near shore Microcystis in Louisville  No reports of T&O problems  Concentration greater near-shore  Avg. near shore 1,243 colonies/ml  Avg. mid river 247 colonies/ml  Toxicity testing not yet available

Nutrients Analysis 2009

Algae Analysis 2009 (Near shore vs Mid River)

Flow Comparison

Temperature Comparison

TP at ORM 463 Comparison

Conclusions from 2 years of blooms  Literature suggests temperatures greater than 25 C needed for Microcystis to bloom  Light penetration needed to start recruitment of spores from sediment  Water column nutrients not a limiting factor – sediment nutrients sufficient  We could have a Microcystis bloom any time the temperature and clarity coincide.