By analyzing key water quality indicators such as pH, Total Phosphorus (TP), and turbidity, we’ve gained valuable insights into how human activity and natural processes shape the lake's ecosystem. Over the past decade, these indicators have shown some areas of concern, particularly around more developed areas and those subject to significant seasonal changes, such as ski resorts and nearby towns.
The spatial trends observed, particularly through the combined interpolation raster's, highlight specific stations that may require further attention. For example, stations near Mount Sunapee, Blodgett Landing, and Georges Mills consistently exhibited higher concentrations of TP and turbidity. These areas, which are often impacted by runoff from development, snowmelt, and other factors, point to the importance of ongoing monitoring and proactive management.
This project also underscores the broader importance of watershed management in maintaining lake health. While regulations in New Hampshire have helped mitigate some issues, challenges like septic system leakage, shoreline development, and non-point source pollution remain. Further policy developments and community involvement will be critical in ensuring the long-term sustainability of Lake Sunapee and other water bodies in the region.
As we move forward, continued efforts to monitor water quality, adapt land-use policies, and engage stakeholders will be essential in preserving the natural beauty and ecological integrity of Lake Sunapee for future generations.
One thing I would address is the resolution of land cover data. In this project, I used 30-meter resolution data from MRLC, which provides a broad overview but lacks finer detail. Using higher-resolution datasets or incorporating more local land-use information could improve the precision of the analysis, especially when examining smaller-scale features or more detailed land-use impacts.
(Image: 16)Future projects could benefit from an extended timeline or incorporating more frequent data points. The current interpolation maps and land use maps only go back to 2011, but with more time I can run more frequent timestamps and go back further to the early 2000's or beyond. This would help give better estimates of the lake's health over a longer time frame and more clarity on the water quality overall.
This project focused on water quality parameters and land cover changes but didn’t incorporate climate factors like precipitation, temperature trends, or snowmelt patterns. In New Hampshire, these elements significantly impact runoff, nutrient loading, and overall lake health. By using climate data, I could better understand how factors like increased rainfall, changing snowmelt patterns, or drought conditions affect water quality metrics like turbidity, phosphorus, and pH levels.
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