
Past Updates:
2004
2003
Report 3: EPA Targeted Watershed Initiative: Susquehanna River Headwaters, NY and PA Accomplishments for this TWI, covering 1 March 2004 through 31 May 2004, are highlighted in RED.
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1) Hydrological and Numerical Assessment of Rainfall-Runoff Response for the Headwaters of Catatonk Creek, Tioga County , NY Master's Thesis Proposal Summary- Glendon B. Hunsinger - Geological Sciences Flooding and associated streambank erosion is of concern in numerous watersheds within the Upper Susquehanna River Basin . In order to address these basin-scale issues an understanding of fundamental hydrologic processes on an individual watershed-scale is essential. The primary goal of this study is to evaluate rainfall-runoff response in the headwater catchments of Catatonk Creek. Hydrometeorologic measurements will occur in all 8 headwater catchments, however more intensive data collection and analysis emphasizes Miller and Sulphur Springs watersheds; two adjacent catchments with known differences in discharge and sediment transport capacities. This effort includes the analysis of hydrologic response under present conditions and modeling to predict response after construction of flood attenuation wetlands. The research will test the following hypotheses: 1) detailed analysis of hydrologic response in Miller and Sulphur Springs subwatersheds provides watershed-scale insight for application to the entire Catatonk Creek basin; 2) the event-based rainfall-runoff response is a coupled function of land-use, topography, and storage area within each watershed; and 3) proper placement of constructed wetlands will enhance storage capacity, and thus, reduce peak flood discharge. The investigation will involve coupled hydrologic, geochemical, and numerical techniques. These techniques will include: 1) measurement of rainfall using tipping bucket rain gauges for analysis of temporal and spatial variability in rainfall; 2) manual and automated stream stage and discharge measurements supporting physical hydrograph separation; 3) grab and automated ISCO water samples supporting geochemical hydrograph separation; and 4) generation of GIS coverages for slopes, land-use, soils, basin area, stream length and profile. These datasets will be employed in conjunction with HEC-1 watershed modeling in order to calibrate present day hydrologic conditions and to predict response following wetland construction.
2) Water and Nutrient Flux in Natural and Constructed Wetlands near the Inflow of the Otselic River to the Whitney Point Reservoir, Broome County, NY Master's Thesis Proposal Summary: David K. Heuer - Geological Sciences
Natural and constructed wetlands exist near the inflow of the Otselic River to the Whitney Point Reservoir. The natural wetlands are characterized as floodplain wetlands that spatially vary in soil saturation/inundation and the constructed wetlands are characterized as open water (palustrine) wetlands. Reconnaissance of the wetlands leads to an initial hypothesis that the natural and constructed wetlands have distinct hydrologic systems that significantly differ from one another. These differences include the direction and rate of groundwater – surface water interactions and evapotranspiration rates. The Whitney Point Reservoir is maintained at 294.4 mASL from November 30 to April 30 and at 296.6 mASL from early May to late November. The second research hypothesis is that the reservoir's 2.2 meter fluctuations between winter and summer reservoir elevations alter the rate, and possibly the direction of groundwater-surface water interactions in both the natural and constructed wetlands. Elevated nutrient concentrations in groundwater and surface water caused by agricultural landuse in the headwater catchment poses a threat to water quality in the reservoir. As a result, anthropogenic eutrophication is a concern for the Whitney Point Reservoir. Wetlands can modify the quality of water received from upland sources in a watershed. The third research hypothesis is that the natural and constructed wetlands modify the input of nutrients (N, P) to the reservoir and this modification shows temporal variations correlated to wet and dry periods and plant growth and dormancy periods. Fieldwork in the natural and constructed wetlands is being conducted to collect data for precipitation rates, surface water inflow and outflow rates, groundwater elevations in piezometer nests, and storage fluctuations at staff gauges. Evapotranspiration in being estimated using the Penman-Monteith method. Investigation of the first hypothesis is being done using a water budget approach in which all the inputs, exports, and changes in storage to the natural and constructed wetlands are monitored and quantified. Comparison of water budgets for the two wetland types, specifically each input's and export's contribution to the change in storage, will address the first research hypothesis. Correlation of hydraulic gradients in the wetlands (determined from groundwater elevation measurements) to reservoir stage (continuously monitored by the U.S. Army Corps of Engineers) will address the second research hypothesis. Groundwater, surface water, and precipitation samples are being collected on a twice per month basis and analyzed for nitrogen and phosphorus concentrations in the Department of Biological Sciences at Binghamton University . Coupling nutrient concentrations to each component of the wetland's water budget will determine the flux of nutrients between the wetlands and reservoir to address the third research hypothesis. Whitney Point Wetland Project Accomplishments - (Summer - Fall 2003):
3) Nutrient Accumulation and Retention By Wetland Plants, Tioga County , NY Nutrient Accumulation and Retention By Wetland Plants: Project Accomplishments (Summer – Fall 2003) Master's Thesis Project: Nathan Munley - Biological Sciences
4) Initiation of Baseline Limnological Survey of Whitney Point Reservoir, Broome County , NY Peter Homyak - Environmental Studies
5) Artificial Flooding and Sediment Movement within Miller Creek, Catatonk Watershed. Ken Hubbard - Geological Sciences and Environmental Studies Completed two planned reservoir releases in Miller Creek from the Camp Badger Reservoir in order to document sediment movement from instream processes above and below a natural wetlands.
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