Since then, missoula has relied on the missoula valley aquifer as the sole source of water in 1889, the first electrical plant was built by a b hammond to power his major downtown properties such as the missoula mercantile and the florence hotel. Lewis and clark county set up the first lwqd for the helena valley watershed in 1992 a year later, missoula county set up a lwqd covering the missoula valley sole source aquifer butte/silver bow established a lwqd in 1995 gallatin county formed a lwqd covering the gallatin valley at bozeman. The inset is of the eastern portion of the missoula valley, including the city of missoula (generally east of reserve street), and the adjacent western urban area the shaded area is the approximate location of septic system use (4000 to 5000. Missoula to create a new sid to construct a collector sewer to serve a portion of the lincolnwood area, which is located in the rattlesnake valley reasons for the petition are slow. Potentiometric surface of the shallow basin-fill, deep basin-fill, and bedrock aquifers, bitterroot valley, missoula and ravalli counties, western montana (open-file version) lafave, ji 2006.
The missoula aquifer is fed by 4 major waterways and other runoff from the beautiful mountains that surround the missoula valley to contribute towards preservation of this resource, and to celebrate the angling/river sport culture of our area, bayern teamed up with montana trout unlimited, naming dancing trout as the official beer of this non. Includes bibliographical references notes some content may be lost due to the binding of the book some pages have a slightly blurry look due to the way that the text is printed. Lafave, john i, 2002, tracing ground-water flow in the missoula valley aquifer, southwest montana montana bureau of mines and geology ground-water assessment open-file report 17. Data provide a vector polygon gis layer showing the county footprints of 234 counties in which 78 designated sole source aquifers (ssa) are located the counties are taken from the federal register notices announcing the ssa designations.
Missoula is a city in the us state of montana and is the county seat of missoula county it is located along the clark fork river near its confluences with the bitterroot and blackfoot rivers in western montana and at the convergence of five mountain ranges, thus is often described as the hub of. Download an adobe acrobat file that discusses how aquifers respond to climatic conditions the document also includes statistics about how wells in montana's statewide monitoring network are responding to the current drought. Introduction the shallow alluvial aquifer in the flathead valley is bound by the flathead river to the east and the whitefish river to the west.
There are 89 gis polygons for the sole source aquifers, since in addition to a single ssa designated area polygons, some regions have delineated gis layers for streamflow zones, aquifer recharge areas, and other features at the land surface important for the ssa designations. Missoula's sole source of drinking water is the missoula valley aquifer the aquifer is susceptible to contamination from septic systems due to the coarse nature of aquifer. Several generic stratigraphie settings common to the missoula valley aquifer results of the investigation indicate that the lateral extent, thickness, and composition of unit two of the missoula valley aquifer is highly variable in some areas of the aquifer, the finer-grained unit two is totally absent.
The flood was the biggest in montana history, and two times that of recent floods in the missoula valley, kustudia said it left more than 66 million cubic yards of waste heavy with metals and arsenic. Ancient lake missoula and the missoula ice age floods lake missoula formed behind an ice dam, which formed when a finger of the purcell lobe of the cordilleran ice sheet advanced into the idaho panhandle in the area which now is occupied by pende orielle lake (figure 2. From a number of sources, including rivers, streams and the missoula valley aquifer, which provides water to 40,000 households and is known to be very clean air quality in missoula county has improved.
Woessner's study became part of the missoula county sole source aquifer petition (msla co hlth dept, 1989), a compilation of geologic, hydrologie, chemical, environmental, and sociological data on the aquifer and its use to date, only reconnaissance level work has been done on the central and northwestern portions of missoula valley aquifer. Of particular interest to the residents of missoula, montana, is the degree of hydraulic connectedness of the hellgate valley aquifer/milltown reservoir sediments superfund site with the missoula valley aquifer and the probability that ground water contamination from the milltown reservoir sediments superfund site may migrate into the missoula. Full text of missoula valley aquifer study : hydrogeology of the eastern portion of the missoula aquifer, missoula county, montana see other formats.
The flood deposited millions of tons of cobble and gravel, which over time, filled the missoula valley and created the missoula valley aquifer to learn more about glacial lake missoula and the flood, visit the montana natural history center's glacier lake missoula website. The aquifer has high source water sensitivity because it is semi-confined and comprised of relatively coarse-grained material the missoula valley aquifer has been. Rathdrum prairie aquifer geologic history the geology of the spokane valley-rathdrum prairie area is the result of multiple geologic events that have occurred over hundreds of millions of years creating both our landscape and the aquifer of today. Flow direction of missoula aquifer missoula valley aquifer study: hydrogeology of the eastern portion of the missoula aquifer, missoula county, montana.