A04_44010796_YELL_GWmonitoring25_2b_SOWfigures.pdf

This document is a 2016 Groundwater Monitoring report for Yellowstone National Park, focusing on wastewater treatment sites at four locations: Madison Junction, Old Faithful, Grant Village, and Fishing Bridge. The report details groundwater sampling procedures, monitoring well locations, and water quality data collection conducted in September 2016. Each site section includes detailed maps showing monitoring well and surface water sampling site locations, groundwater elevations, specific conductance, nitrate/nitrite concentrations, chloride levels, and total Kjeldahl nitrogen measurements.

The monitoring involved nine wells at Madison Junction (with some wells destroyed), stream sampling sites, and comprehensive water quality analysis. Key observations include groundwater gradient trends, conductivity variations potentially linked to geothermal activity, nitrate concentrations relative to Wyoming water quality standards, and chloride concentration patterns. The data provides a comprehensive environmental assessment of groundwater conditions near the park's wastewater treatment facilities, supporting ongoing environmental monitoring and management efforts at Yellowstone National Park.