The scale extends from 0 (a very. strong acid) to 14 (a very strong base or highly alkaline). The middle of the scale, 7, is neutral, neither acidic nor basic. Soil pH is important because it affects the availability of nutrients in the. rooting zone. This publication explains when lowering soil pH is important for commercial producers and. recommends practices to safely and effectively lower soil pH.
Yellowstone Geysers & Hot Springs. In Yellowstone National Park there are about 500 geysers and some 10,000 thermal features. Yellowstone contains the majority of the world's known geysers. The geysers and other features are major attractions. Old Faithful geyser is perhaps the park's best know and most visited attraction. Many lesser-known geysers are equally impressive and can be seen along park roads or at the end of short hikes.
Yellowstone's hottest geyser basin is Norris Geyser Basin. A research drill hole at the basin found a temperature of 459 degrees F (237 degrees C) at a depth of only 1,087 feet. Many geyser-gazing experts feel Norris Geyser Basin is the most exciting and unpredictable of the various basins in Yellowstone.