1. Assessment of Narragansett Bay Waters using data from the Fixed-Site Water Quality Monitoring Network By Heather Stoffel University of Rhode Island- Graduate School of Oceanography Rhode Island Department of Environmental Management -Office of Water Resources Narragansett, Rhode Island, USA October 8, 2009

2. Narragansett Bay Fixed-Site Water Quality Monitoring Network Agencies: RIDEM-OWR, URI/GSO,NBC, NBNERR, NBNEP, & RWU 13 Site Locations:  West Passage (NP,MV,QP, GSO )  East Passage (PP,PC,TW)  Providence River (BR, CP)  Seekonk River (PD)  Greenwich Bay (GB, SR)  Mt. Hope Bay (MH) Monitoring Season: buoy stations (May-Oct) & land- based stations (year round) Funding: NOAA Bay Window Program, EPA Clean Water Act (sections 319 & 106), NBC, & NERRS

3. Winter Upper Bay Station: 2009

4. Forcing Factors on Chlorophyll and Oxygen Levels: June 2009

5. Providence River to West Passage (BR, NP, MV) Forcing Factors on Chlorophyll and Oxygen Levels: July 2009

6. Forcing Factors on Chlorophyll and Oxygen Levels: August 2009 Providence River to West Passage (BR, NP, MV)

7. Greenwich Bay Hypoxia Sally Rock Greenwich Bay Marina

8. East Passage Hypoxia 2009

9. RIDOCS Results using NBFSMN Time-Series Data

10. Translating the RIDOCS Results into Impairment Listings for Oxygen in Narragansett Bay Impairments listed based on more than 1 exceedence in a 3 year period. Quonset Point violated in 2008-2009. This data will be used in 2010 state assessments by RIDEM-OWR. Listed in 2008:

11. RIDEM’s Recommendations for Regarding Impairments due to Hypoxia in Narragansett Bay Previously listed waters remain listed Previously listed waters remain listed –Providence River, Upper Bay, & Greenwich Bay Portion of the West & East Passage is identified by RIDOCS as impaired in 2008: Portion of the West & East Passage is identified by RIDOCS as impaired in 2008: –Mt. View –Popposquash Pt. West Passage may have more possible impairments West Passage may have more possible impairments –Data now potentially supports listing Quonset Pt. area based on criteria –Area of concern: Mt. View to Quonset Point