Within the original 125 acre Fort Clatsop National Memorial there are several small streams, springs and ponds, as well as, the Lewis and Clark River. In 1995, a Water Quality Baseline Inventory was initiated and data was collected for 3 years. Using this information, several sites were selected for a long term monitoring program, which is still ongoing at the present time. All water quality data is stored in our data base for use by scientisits and researchers.
Through a cooperative agreement with the National Weather Service, Fort Clatsop National Memorial set up a weather station in 1998 and began recording daily weather conditions. Monthly reports are compiled and sent in to the Portland office. The park's climate is mild and wet with annual precipitation averging about 70 inches per year. Average annual temperatures range from a high of 67 degrees (F) to a low of 35 degrees (F).
Lewis & Clark National Historical Park:
Did You Know?
After returning to the United States, William Clark was appointed brigadier general of the Missouri Militia and Superintendent of Indian Affairs for the western territories , and later became governor of Missouri. He married Julia Hancock and had five children. He was 68 years old when he died.