Lower Granite Dam Geological Features

Its drainage basin is about 13 700 square miles 35 000 km 2 large.

Lower granite dam geological features. Granite is a light colored igneous rock with grains large enough to be visible with the unaided eye. It forms from the slow crystallization of magma below earth s surface. Lower granite dam this congressionally authorized project consists of lower granite dam navigation lock powerhouse a fish ladder and associated facilities. Proceed 35 miles following the directional signs to lower granite dam.

At security gate dial 2210 for crossing escort. The dam located at the upstream end of lake bryan is about 3 200 feet long with an. Thinking of the geologic record as a book is helpful to understand each page of earth s history. Lower granite lock and dam is a concrete gravity run of the river dam in the northwest united states on the lower snake river in southeastern washington it bridges whitman and garfield counties.

Lower granite dam navigation lock is the last of eight locks encountered in the columbia snake inland waterway a 465 mile river highway that allows barge transport of commodities between the pacific ocean and lewiston id. The longest of the salt river s many tributaries is the 195 mile 314 km verde river. Scarborough june 30 1981 introduction the accompanying geologic maps depict the general geology of a two mile wide strip centered about the salt river starting just below roosevelt. Lower granite dam is part of the columbia river basin system of dams built and.

Annual statistics water. Reconnaissance geology along the lower salt river from roosevelt dam to granite reef dam central arizona by robert b. Usgs 13343600 snake river below lower granite dam wa available data for this site summary of all available data location map time series. The salt river o odham pima.

Hakanyacha or hakathi is a river in gila and maricopa counties in arizona united states that is the largest tributary of the gila river. Opened 45 years ago in 1975 the dam is located 22 miles 35 km south of colfax and 35 miles 56 km north of pomeroy. Its distinctive features allow researchers to piece together the history of this unique location one of america s treasures and a unesco world heritage site. Usgs 13343595 snake river right bank bl lower granite dam wa provisional data subject to revision available data for this site summary of all available data location map time series.

The beginning of the story starts at the bottom of the. Granite is composed mainly of quartz and feldspar with minor amounts of mica amphiboles and other minerals this mineral composition usually gives granite a red pink gray or white color with dark mineral. The river is about 200 miles 320 km long. The grand canyon tells one of the world s greatest geologic stories.

The project provides hydroelectric generation navigation recreation and incidental irrigation. Hwy 194 sw follow signs to almota and boyer park.