- 1 What caused the Missoula flood?
- 2 What is the primary type of geologic material making up the Spokane Valley Rathdrum Prairie Aquifer?
- 3 What landscapes did the Missoula floods create?
- 4 How did the Missoula floods change the landscape of eastern Washington?
- 5 What was the largest flood in history?
- 6 How many times did Lake Missoula flood?
- 7 When was the Spokane aquifer discovered?
- 8 Where is the Spokane Valley-Rathdrum Prairie SVRP aquifer located?
- 9 Where are aquifers found all around the world?
- 10 Could the Missoula floods happen again?
- 11 How many Ice Age floods passed through the Columbia Gorge?
- 12 What was the biggest flood in Washington state?
- 13 What happened to Eastern Washington during the floods?
- 14 What happened to Glacial Lake Missoula at the end of the last Ice Age?
- 15 How does a lake in Missoula MT relate to the Megafloods?
What caused the Missoula flood?
These floods were the result of periodic sudden ruptures of the ice dam on the Clark Fork River that created Glacial Lake Missoula. After each ice dam rupture, the waters of the lake would rush down the Clark Fork and the Columbia River, flooding much of eastern Washington and the Willamette Valley in western Oregon.
What is the primary type of geologic material making up the Spokane Valley Rathdrum Prairie Aquifer?
Spokane Valley – Rathdrum Prairie Aquifer. The SVRP aquifer is composed of the previously described unconsolidated coarse-grained sand, gravel, cobbles, and boulders primarily deposited by a series of catastrophic glacial outburst floods.
What landscapes did the Missoula floods create?
During the last ice age, 18,000 to 13,000 years ago, the landscape of eastern Washington was repeatedly scoured by massive floods. They carved canyons, cut waterfalls, and sculpted a terrain of braided waterways today known as the Channeled Scablands.
How did the Missoula floods change the landscape of eastern Washington?
While volcanic activity along the Cascade range enriched the soil, a series of floods coming from Montana contributed to the silty soil that has been conducive to many of the Valley’s crops. It also helped the region become a serious wine producer.
What was the largest flood in history?
The largest known meteorological flood—one caused by rainfall, as in the current Mississippi River flood—happened in 1953, when the Amazon River overflowed.
How many times did Lake Missoula flood?
It was the largest ice-dammed lake known to have occurred. The periodic rupturing of the ice dam resulted in the Missoula Floods – cataclysmic floods that swept across eastern Washington and down the Columbia River Gorge approximately 40 times during a 2,000 year period.
When was the Spokane aquifer discovered?
The sole source of water for most people in Spokane County, Washington and Kootenai County, Idaho, is a large underground rocky formation containing high-quality water called the Spokane Valley-Rathdrum Prairie Aquifer (Aquifer), and it is also commonly known as the “Rathdrum-Spokane Aquifer.” Discovered in 1895, this
Where is the Spokane Valley-Rathdrum Prairie SVRP aquifer located?
The Spokane Valley-Rathdrum Prairie Aquifer spans two states (Washington and Idaho) and lies within four counties (Kootenai, Bonner, Stevens and Spokane). Natural resources, such as the Aquifer, that cross political boundaries are often subject to different, and sometimes conflicting standards, protection and uses.
Where are aquifers found all around the world?
Aquifers Overview Unlike surface water, which is mostly found in the northern and eastern parts of the state, aquifers are widely distributed throughout California. Additionally, they are also often found in places where freshwater is most needed, for instance, in the Central Valley and Los Angeles.
Could the Missoula floods happen again?
Could huge floods on this scale happen again? Although global warming may now be a serious concern, it is likely that long-term climate cycles will cause large ice sheets to return at some time in the distant future, and cataclysmic outburst floods will probably recur in this region.
How many Ice Age floods passed through the Columbia Gorge?
At least two floods seem to have passed down the Columbia valley after the last of the Missoula floods, including a large flood about ~14 ka likely from cataclysmic demise of the thinning Okanogan ice lobe dam impounding glacial Lake Columbia.
What was the biggest flood in Washington state?
The National Oceanic and Atmospheric Administration (NOAA) says 1942 holds the record, measured at the southwest waterfront, followed closely by the monster flood of 1936. Old news accounts agree. The 1942 flood was brought on by 5.4 inches of rain that fell in Washington over 77 hours in the third week of October.
What happened to Eastern Washington during the floods?
The floods swept across the Spokane Valley in eastern Washington, spilling into Glacial Lake Columbia. After overflowing the shores of Glacial Lake Columbia, the floods spread out across the landscape and tore a myriad of channels across much of eastern Washington, creating the Channeled Scablands.
What happened to Glacial Lake Missoula at the end of the last Ice Age?
At the end of the last Ice Age, about 18,000 to 15,000 years ago, an ice dam in northern Idaho created Glacial Lake Missoula in Montana. The ice dam burst and released flood waters across Washington and down the Columbia River back flooding into Oregon before eventually reaching the Pacific Ocean.
How does a lake in Missoula MT relate to the Megafloods?
Water in the Clark Fork ponded up behind an enormous ice dam from a lobe of the Cordilleran Ice Sheet, and reached a maximum depth of 600 meters as Glacial Lake Missoula.