Old Faithful and hundreds of other geysers, such as Beehive, Castle, Riverside,
and Grand, not to mention numerous hot springs! All these hydrothermal
features attract millions of visitors every year. The
Firehole River runs through this area, so it is a logical place to examine
the stream’s water quality.
Very good—and Midway Geyser Basin should be Sample Site 3. Midway
is approximately halfway between Kepler Cascades and the junction of the
Firehole and Gibbon Rivers, so it’s a convenient reference point