Geology 305 field report
North Fork Cosumnes River, CA
The work of running water
This field report is for anyone that is interested in the effects of running water in the North Fork Cosumnes River California.
This report is to see the effects of stream erosion and transportation of sediment caused by running water in the North Fork Cosumnes River California. The field repot was conducted on July 9, 2014 by Joel Morsey and John Morsey. I chose this location because I used to go there with my family when I was younger to swim in the river. I was interested to see how low the river was, because of the drought California has been having and to see the effects of erosion in more detail because the water would be much lower.
I am expecting to see lots of detail in the stream erosion like potholes and sediment left behind because of low amount of water flow in the river. As stated in Foundation of Earth Science “a streams ability to erode bed rock is greatly enhanced by the particles it carries”. The geologic feature of the North Fork Cosumnes River is created by this process.
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North Fork Cosumnes River is what you call a bedrock channel. A bedrock channel is a channel in which the stream is actively cutting into solid rock. Evidence of this is the visible erosion of potholes in the bedrock like the picture to the left shows lots of potholes. How does this happen to the bedrock, according to the text, by sand and pebbles large and small caught in swirling eddies that act like drills and bore circular potholes into the bedrock channel
4. Identify the layer of the Earth in the diagram to the right which makes up 70% of the Earth’s mass and is mostly solid but capable of flow, causing changes in the Earth’s surface. (S6E5a)
Depending on the type of path that was created, it would largely influence the rate and distance to which the sediment was transported.
The primary purpose of Friend dam is to help regulate the flow of San Joaquin into available uses of its environmental, wildlife, and farmer’s impacts. The dam controls the flow of water delivery where it needs authorization first before the schedule can release any delivery waters into canals, steam, and wild life habitats. There will be agreements and many protocols to do with it first to avoid unnecessary spilling. There are 5 release schedules which include quantity of water available, time water, flood control requirements, release schedules from storage reservoir above Millerton Lake, and water user requirements. These benefits of flood control, storage management, modification into Madera and Friant-Kern Canals, to stop salty water from abolishing thousands of lands in Sacramento and throughout San Joaquin Delta, as well as deliver masses of water into agricultural lands in 5other counties in the San Joaquin Valley.
More specifically, Trois-Rivieres is located in an area with flat and rolling hills, and fertile soils that play a huge part of Trois-Rivieres’s economy. The formation of the Great Lakes-St Lawrence Lowlands happened during the Paleozoic era. “The Great Lakes-St Lowlands were formed by the effects of glaciation. This is caused the city’s rolling landscape where flat plains are interrupted with glacial hills and deep river valleys. After the glacial period, when a large volume of water melted out from the glaciers, the lakes were large, even larger than they are today. However, the lakes shrank to their present size, and flat plains of sediments remained. These sediments formed excellent soil for farming” (Pandya, n.d). This process left behind a large amount of sediment rock, which was beneficial for the manufacturing industry.
The Charles River, always known as “having a healthy reputation for its extreme filth,” has a new lease on life ever since former governor Bill Weld took the dive heard round the world fully clothed around the same time the EPA announced a “Clean Charles” ready for swimmers by Earth Day 2005. Reactions concerning the river’s quality since Welds famous 1996 plunge have ranged from skepticism to complete dismissal of the cleanup promises, proving only that indeed, he “loved that dirty water.”
The San Joaquin River Project was a plan completed in 2009 made to recreate San Joaquin River, which was dried up after dams were built in 1942. The San Joaquin River restoration is to bring back water flows from the San Joaquin river to the Friant Dam, and to revive the salmon and other fish population. There are two articles debating whether they either agree or disagree with the project. I chose the article, “River Plan Too Fishy For My Taste Buds”. This article came from The Fresno Bee newspaper, which correspondingly means it came from Fresno. The type of people who live in Fresno are farmers, workers who work for other people, democrats, and people who care more about jobs rather than the environment. I agree with this article from The Fresno Bee because I believe Bill McEwen, the author of this article, is the better expert because of his credentials and achievements. I will be using the article “River Restoration Project Offers a Sprinkling of Hope” by Daniel Weintraub to back up my argument.
The Don Valley Brickwork consists of many different layers of geological deposits, allowing us to observe and have a better understanding of how the sediments we see today are formed. The most bottom layer in the Brickworks are from the Georgian Bay Formation, and consists of grey- shale bedrocks. Fossils are often found in this layer and it is estimated that this deposit of sediments is around 445 million years old. Above the bedrocks is a thin layer of grey clay sand and gavels left behind by the Illinoian Glacier. This layer is called the York Till and occurred around 135,000 years ago. The next layer consists of a sandy deposit called the Don Formation, which is formed by the Sangamonian Interglacial Stage. Many plant and animal fossils are found in this layer due to warmer climate around 120,000 years ago. Above it lies the Scarborough Formation, which consist of clay and sand. This sediment likely occurred 115 - 106,000 years ago. The next layer above is the Poetry Road Formation, and consist of sand and gravel. This layer is likely formed during the early Wisconsin glacial substage around 106- 75,000 years ago. Higher is the Sunnybrook Drift which was formed 60 – 75,000 years ago. And on the surface, is the Halton Till, which was left behind by the final push of the Wisconsin Glacier.
The average elevation in the Hudson Plains is 120m above sea level. It is a flat lowland area. The land is made up of mineral soils, with few outcrops of underlying sandstone and shale. This land was created when the weight of glaciers depressed the Hudson Bay region and the ocean waters flooded areas up to 300 km inland from the current coastline. Then, during the retreat of the huge continental ice sheets, drainage into the Hudson Bay was blocked and lakes (Agassiz and Ojibway for example) were formed along th...
As mountain ranges began to reappear, streams and rivers became more vibrant with rushing waters transferring boulders and gravels to different places on the surface of Earth. Water is known to be one of the most significant factors of the Exhumation of the Rockies; however wind is thought to have played an important role in the removal of the mountains from the depths of debris as well. As John David Love has said, “Wind erosion has tremendous significance in this part of the Rocky Mountain region” (McPhee 60). Consistent southwest winds, blowing in the same direction throughout each time period of the Earth’s history, picked up thousands of feet of debris from the surface of the Earth and carried it away into the Atlantic Ocean. The work of erosion through water and wind has given the landscape its
"Step 1. Characterizations of the Watershed." Forest Service: 17 pars. Viewed 7 Nov. 2002. <http://www.fs.fed.us/r2/psicc/spl/south_platte_web/step_1.htm>.
Ice dams in the Clark Fork area that backed up Glacial Lake Missoula actually caused some of the largest floods known to man. As ice will float, these ice dams would periodically rise up and burst, catastrophically flooding the Rathdrum Prairie, eastern Washington and into northern Oregon. Locally, these floods brought in glacial till and deep deposits of outwash that obliterated the St. Joe River once running through the Rathdrum Prairie. The southernmost edge of these deposits terminated where Coeur d’Alene exists today, damming the old St. Joe River and creating Lake Coeur d’Alene (Alt and Hyndman, 73). The new lake received the entire flow of the Coeur d’Alene and St. Joe Rivers, more than could be absorbed through the gravel deposits, thereby causing the lake to overflow and seek a new course, now known as the Spokane Ri...
Have you ever wanted to go caving? Do you like hiking? Well, then Carlsbad Caverns is the place for you! There are many activities to do there such as caving, spelunking, hiking and eating 755 feet below the surface. That's right, you can eat food at the bottom of Carlsbad Caverns. Although spelunking is dangerous and the caves flood easily, it is very fun activity. If that is too scary going to fiesta De Santa Fe. Fiesta De Santa Fe is a fun and safe way to enjoy New Mexico. 270,000 Brazilian bats live in Carlsbad Caverns National Park and come out at dark making a sensational show.
The paper includes a description of the wetlands and their ecological importance, as well as the political and economic impacts the highly managed and controlled system has on the areas that use its water. The paper summarizes and provides context for the preliminary research projects in the region. The paper states "water dedicated to the delta ecosystem will come at a cost". This is an important issue and refers to the fact that the water that is allowed to naturally flow downstream for environmental restoration purposes will not be used for municipal or agricultural use. The paper does not quantify the costs. It does however state, that the amount of water allocated for restoration in the delta will not be determined by science alone, but will most likely be determined by policy makers and stakeholders. Consistent monitoring of the ecological changes following the pulse flow release is essential for better management and continuous restoration of the river's riparian areas and the Colorado River Delta.
...get once you've slipped on the rocks. Industries that are effected by this are medical factories that make Band-Aids and other useful things to cover cuts with. Also, doctors get money when children come in with an infection that they have in a cut from the river because they slipped on the biofilm on the rocks.
Moore, L. (2011, March 10). Pasig River: Before and After [Web log post]. Retrieved from http://pasigriverwatch.wordpress.com/2011/03/10/updates-on-pasig-river/