http://hdl.handle.net/1813/11045 Thu, 20 Jun 2013 09:16:37 GMT 2013-06-20T09:16:37Z http://ecommons.library.cornell.edu:80/retrieve/49293/cayuga.gif http://hdl.handle.net/1813/11045 http://hdl.handle.net/1813/30561 Title: Summary of Cayuga Lake and its watersheds 1927 to 2008 Authors: Bouldin, David R. Abstract: The data base consisted of Cayuga Lake data from 1927, 1968-1974 and 2000 to 2008 and water shed data from 1972 through 2008 – overall on the order of more than 2000 samples. An excel spreadsheet was developed to analyze this data as a calcium-carbonate-phosphate system and interactions with biomass and chemical precipitation. First, as is well known, the Lake is a huge reservoir containing an amount of water equal to 10 years of runoff. This means consequences of changes in watersheds occur gradually but once changed are difficult to reverse. Second, calcium carbonate chemistry of the lake has not changed 1927 to 2008. ALL (1927 to 2008) of the calcium carbonate parameters fit nicely on one cluster of points around one line. The stream water deviates slightly from the lake data but clearly belongs to the same “family”. Third, for the stream data, concentrations of phosphate, nitrate and sediment increases as flow increases and the relation between flow and concentrations has not changed 1972-2008. Fourth, the most reactive phosphate fraction in lake samples (1968-1974 plus 1999-2008) fits within a framework defined by slightly soluble calcium phosphates. As pH increases, the solubility decreases. This provides a feed back mechanism which reduces the impact of inputs of phosphate; photosynthesis reduces the total inorganic carbon in solution and increases pH which in turn decreases solubility and slows photosynthesis. Stream samples do not conform to this framework. Fifth, the concentration of most soluble phosphate fractions of stream water, mixed with inputs from waste water treatment and lake source cooling, decreased by a factor of more than 2 as measured by sampling within 100 m from stream input and to about the concentration of bulk lake in samples at 1000 m from inlet. This is hypothesized due to some unknown combination of dispersion, biological immobilization and precipitation. Clearly, the changes within 1000 m from the inputs transformed the water into something very nearly like bulk lake water. Don’t mess with the inlet until we understand these transformations. Sixth, for future monitoring of streams, the Impact of flow and seasonal effects must include samples from all flow regimes and seasons or else misleading / useless data will be collected. Seventh, there are many discrepancies between observations and expectations based on solubility of mineral forms of calcium carbonates and calcium phosphates. But these relationships are not happenstance – so what is the basic chemistry? In 1972 a project was initiated to study the impact of human activity on water quality in NY with partial funding from the Rockefeller Foundation. Over the next 5 years a multidisciplinary group studied social, economic, and environmental aspects of human activities in central NY and summarized their findings in a book which influenced and influences applied research and extension. I was very fortunate to be part of that work and subsequently I have continued to study water quality in central NY periodically to 2008. During the initial work, Dr R.T. Oglesby introduced us to the limnology of lakes (Cayuga Lake in particular) and I have continued to work on understanding interactions between Cayuga Lake and its watersheds. Description: See also the report "Lake and Phosphorus Inputs: A Focus on Management": http://hdl.handle.net/1813/30560 Wed, 05 Dec 2012 00:00:00 GMT http://hdl.handle.net/1813/30561 2012-12-05T00:00:00Z http://hdl.handle.net/1813/30560 Title: Lake and Phosphorus Inputs: A Focus on Management Authors: Bouldin, D.R.; Capener, H.R.; Casler, G.L.; Durfee, A.E.; Loehr, R.C.; Ogelsby, R.T.; Young, R.J. Abstract: Dissolved phosphorus is the element that most influences the productivity of freshwater lakes and impoundments. Algae affect the quality and appearance of water. They affect the level of fish production. They also affect the costs of filtering water supplies for domestic and industrial use. This summary report is intended for use by decision makers in government, the leaders of various organizations and agencies, and interested citizens. It has attempted to point out that there are differences in appropriate control strategies that can be applied and differences in perceptions of the individual families and communities involved. Consequently, flexible policies and institutional arrangements well be needed and can be used without irreversible damage being done to lakes during a progressive “test-and-evaluate” approach. Sat, 01 Jan 1977 00:00:00 GMT http://hdl.handle.net/1813/30560 1977-01-01T00:00:00Z http://hdl.handle.net/1813/28639 Title: Cayuga LakeWater Quality Monitoring, Related to the LSC Facility: 2011 Authors: DeFrees Hydraulics Laboratory, School of Civil and Environmental Engineering, Cornell University Abstract: This report summarizes the results of water quality monitoring efforts related to Cornell University’s Lake Source Cooling (LSC) facility in 2011. This monitoring program began in 1998 and was performed annually by the Upstate Freshwater Institute (UFI) until 2006. In 2007 water sample collection and generation of the annual report was taken over by the De Frees Hydraulics Laboratory of the School of Civil and Environmental Engineering at Cornell University. UFI continues to carry out all laboratory analysis. The format of this report is largely based on previous annual reports written by UFI. Mon, 02 Apr 2012 00:00:00 GMT http://hdl.handle.net/1813/28639 2012-04-02T00:00:00Z http://hdl.handle.net/1813/22478 Title: Cayuga LakeWater Quality Monitoring, Related to the LSC Facility: 2010 Authors: DeFrees Hydraulics Laboratory, School of Civil and Environmental Engineering, Cornell University Abstract: This report summarizes the results of water quality monitoring efforts related to Cornell University’s Lake Source Cooling (LSC) facility in 2010. This monitoring program began in 1998 and was performed annually by the Upstate Freshwater Institute (UFI) until 2006. In 2007 water sample collection and generation of the annual report was taken over by the DeFrees Hydraulics Laboratory of the School of Civil and Environmental Engineering at Cornell University. UFI continues to carry out all laboratory analysis. The format of this report is largely based on previous annual reports written by UFI. Tue, 29 Mar 2011 00:00:00 GMT http://hdl.handle.net/1813/22478 2011-03-29T00:00:00Z http://hdl.handle.net/1813/15198 Title: Cayuga Lake (New York) Water Quality Monitoring Data Related to the Cornell Lake Source Cooling Facility, 1998-2009 Authors: Adams, James Abstract: Cornell University has been monitoring ambient conditions in Cayuga Lake since 1998 to provide a record of water quality conditions in the lake before and after the Lake Source Cooling facility startup in 2000. The primary objective is to conduct an ambient water quality monitoring program focusing on the southern portion of Cayuga Lake to support long-term records of trophic state indicators, including concentrations of total phosphorus, soluble reactive phosphorus, chlorophyll-a, turbidity, and other measures of water quality. In addition to this water quality monitoring data set, the complete collection of annual reports is available online: http://hdl.handle.net/1813/8353 Description: This data package must be uncompressed for use. In addition to the data described above, it includes an Ecological Metadata Language (EML) record, which describes in considerable detail the contents of the data tables, methods, usage rights, and other information. All users of these data are strongly encouraged to review this EML record. Mon, 12 Jul 2010 14:55:07 GMT http://hdl.handle.net/1813/15198 2010-07-12T14:55:07Z http://hdl.handle.net/1813/15196 Title: Cayuga LakeWater Quality Monitoring, Related to the LSC Facility: 2009 Authors: DeFrees Hydraulics Laboratory, School of Civil and Environmental Engineering, Cornell University Abstract: This report summarizes the results of water quality monitoring efforts related to Cornell University’s Lake Source Cooling (LSC) facility in 2009. This monitoring program began in 1998 and was performed annually by the Upstate Freshwater Institute (UFI) until 2006. In 2007 water sample collection and generation of the annual report was taken over by the DeFrees Hydraulics Laboratory of the School of Civil and Environmental Engineering at Cornell University. UFI continues to carry out all laboratory analysis. The format of this report is largely based on previous annual reports written by UFI. Thu, 08 Jul 2010 16:50:15 GMT http://hdl.handle.net/1813/15196 2010-07-08T16:50:15Z http://hdl.handle.net/1813/14722 Title: Cayuga Lake Water Quality Monitoring, Related to the LSC Facility: 2008 Authors: DeFrees Hydraulics Laboratory, School of Civil and Environmental Engineering, Cornell University Abstract: This report summarizes the results of water quality monitoring efforts related to the LSC facility in 2008. This monitoring program began in 1998 and was performed annually by the Upstate Freshwater Institute (UFI) until 2006. In 2007 water sample collection and generation of the report was taken over by the DeFrees Hydraulics Laboratory of the School of Civil and Environmental Engineering at Cornell University. UFI continues to carry out all laboratory analysis. The format of this report is largely based on previous annual reports written by UFI. Thu, 01 Apr 2010 16:00:21 GMT http://hdl.handle.net/1813/14722 2010-04-01T16:00:21Z http://hdl.handle.net/1813/14721 Title: Cayuga Lake Water Quality Monitoring, Related to the LSC Facility: 2007 Authors: DeFrees Hydraulics Laboratory, School of Civil and Environmental Engineering, Cornell University Abstract: This report summarizes the results of water quality monitoring efforts related to the LSC facility in 2007. This monitoring program began in 1998 and was performed annually by the Upstate Freshwater Institute (UFI) until 2006. In 2007 water sample collection and generation of the report was taken over by the DeFrees Hydraulics Laboratory of the School of Civil and Environmental Engineering at Cornell University. UFI continues to carry out all laboratory analysis. This report is largely based on previous annual reports written by UFI. Thu, 01 Apr 2010 15:58:27 GMT http://hdl.handle.net/1813/14721 2010-04-01T15:58:27Z http://hdl.handle.net/1813/14720 Title: Cayuga Lake Water Quality Monitoring, Related to the LSC Facility: 2006 Authors: Upstate Freshwater Institute Abstract: The primary objective is to conduct an ambient water quality monitoring program focusing on the southern portion of Cayuga Lake to support long-term records of trophic state indicators, including concentrations of phosphorus and chlorophyll, and Secchi disc transparency, and other measures of water quality. Thu, 01 Apr 2010 15:55:08 GMT http://hdl.handle.net/1813/14720 2010-04-01T15:55:08Z http://hdl.handle.net/1813/14719 Title: Cayuga Lake Water Quality Monitoring, Related to the LSC Facility: 2005 Authors: Upstate Freshwater Institute Abstract: The primary objective is to conduct an ambient water quality monitoring program focusing on the southern portion of Cayuga Lake to support long-term records of trophic state indicators, including concentrations of phosphorus and chlorophyll, and Secchi disc transparency, and other measures of water quality. Thu, 01 Apr 2010 15:53:29 GMT http://hdl.handle.net/1813/14719 2010-04-01T15:53:29Z