The ancient town of Barnard Castle, Egglestone Abbey, and Rokeby Park, well known through Sir Walter Scott's poem, are all passed. [15] Two "cuts", known as the Mandale Cut and the Portrack Cut, were made to straighten its course in 1810 and 1831 respectively. This link take you away from the Fun Kids website. Before these cuts were made, the journey by sailing barge from Thornaby to Middlesbrough, allowing for tides and other factors, could take as long as the journey from the mouth of the Tees to London. The Tees is a river in England. Forest in Teesdale County Durham DL12 0XH Tel: 01833 622336 Email Visit Website Book Now High Force is one of the most impressive waterfalls in England. The area receives over 2,000 millimetres of rain each year. The current Tees Barrage is close to the site of the Mandale Cut.[19]. [27], Other industrial companies that use the River Tees are manufacturing and servicing the North Sea oil and gas industry as well as the renewable energy industry sector, including offshore wind turbines. The River Tees rises on the eastern slopes of the North Pennines and flows east for 85 miles to finally reach the North Sea near Middlesborough. The Amazon River has the largest volume of freshwater of any river in the world. Moses got into an elevator. Be sure to reuse andrecycle whenever you can, and bin rubbish responsibly! Upper course. Were highlighting 10 fascinating facts about rivers that you may not know. Check out these top 10 facts Rivers are some of the most important natural features on Earth. It is also 85 miles or 137 kilometres long. The River Tees was featured in the television series Seven Natural Wonders as one of the wonders of the North, and in the post-apocalyptic drama The Last Train having blown its banks. Learn all about them with our fascinating facts about rivers! Lets dive in to find out more. U.S. Geological Survey. This is a very popular area for walking, so you'll likely encounter other people while exploring. Dan Gardner, who serves on the board of the New England Community Store, requested $23,000 from the city sales tax fund to purchase a new system for the store. Your browser may ask permission to access the microphone, just accept this. On the main street alone, six houses were completely destroyed and many more left uninhabitable. During the rainy season, the Amazon River can rise over 30 feet, tripling the width of the River in some places. The River Tees was featured in the television series Seven Natural Wonders as one of the wonders of the North, and in the post-apocalyptic drama The Last Train having blown its banks. While the Amazon River dolphin is quite abundant in the waters of the Amazon and Orinoco rivers, it is currently considered an endangered species due to recent population declines resulting from a number of human activities. Based on a fossilized dolphin discovered in Peru's Pisco Basin, the Amazon River Dolphin is estimated to have evolved about 18 million years ago. Approximately 687,000 people live within the catchment area concentrated in the main towns of Darlington, Hartlepool, Middlesbrough, Redcar and Cleveland, and Stockton-on-Tees. Put in Gabions to protect walls and embankments from erosion Included Fishing platforms, street lighting and replanting to improve the environment Kept building materials in keeping with existing architecture. The source of the River Tees is Cross Fell in the Pennines. The mouth of the river will take the water from the river into the sea, oceans or a large lake. Content of this web page is sourced from wikipedia ( http://simple.wikipedia.org). [10] From here the valley begins to open out, and traverses the rich plain east and south of Darlington in large meandering curves. We do this to improve browsing experience and to show personalised ads. Journal Of Heredity, vol. You're leaving our kids' pages to visit a page for grown-ups! The vast majority of these products are still related to the steel and chemical industries made by companies that are members of the Northeast of England Process Industry Cluster (NEPIC). Today Teesport is owned by PD Ports; it is located 5.6 miles (9.0km) from the North Sea and 3.1 miles (5.0km) east of Middlesbrough. Flood events along the River Tees
Make sure that your Mum, Dad or a Guardian looks at it first. At the height of the flood some stretches of Yarm High Street were submerged in 20 feet of water. And theyre super-powerful forces of nature, too carving out deep valleys and gorges, and shaping the land as they flow to the ocean! 26.7 miles (43 km) The length of the River Tees that is navigable. Giffard, Pierrick et al. Organization Of American States, 2005, p. 2. The tortuous channel below Stockton has been straightened by artificial cuts, and large areas along the estuary shore have been reclaimed by dumping slag. It passes through the Tees Barrage between these ports, turning tidal downstream from the barrage. It's Where 40% of All Water in South America Ends Up. What is A person who sells flower is called? In the upper reaches the river is calm and rural. The waterfall itself consists of two different types of rock. The River Nile is 6,650km. [6], The course of the valley down to here has been generally east-south-east, but it now turns north-east near the village of Whorlton. From the area near Eggleston, the river is crossing over millstone grit. The water will then overflow out of the river and will sometimes cause devastation in peoples houses and towns. Also, High Force, one of the most prominent features on the river, is the largest. 49, no. 10) Its not just rivers themselves which are fascinating its the wonderful wildlife that lives in them, too! This area is part of the North Pennine Area of Outstanding Natural Beauty. A spokesperson for the UK Environment Agency said, "Samples of water, sediment, mussel and crab have been collected and are being sent to our labs for analysis to consider whether a pollution incident could have contributed to the deaths of the animals." The Amazon River Dolphin (Inia geoffrensis), also known as the pink river dolphin or boto, is one of just four species of "true" river dolphins. The tidal part, which is affected by the North Sea's tides, runs for 68 miles (109 km) from the mouth of the river to Teddington Lock in west London. 403-406., doi:10.1130/g45769.1, Hernndez-Fontes, Jassiel Vladimir et al. The areas where large scale commodity chemical industry continues to be based are Billingham and Seal Sands, both on the north bank of the River Tees, and Wilton on the south bank. The River Thames is the river that goes through London. Since 1825, when the Stockton and Darlington Railway was built (it was extended to Middlesbrough in 1830), Teesside has been the scene of large-scale industrial development and urbanization. In its upper course the Tees flows in a typical Pennines dale (valley) where high moorlands flank an attenuated strip of farmland. "When You Get What You HavenT Paid For: Molecular Identification Of 'Douradinha' Fish Fillets Can Help End The Illegal Use Of River Dolphins As Bait In Brazil." The Amazon River and the Amazon Rainforest were named by Francisco de Orellana, the first European explorer to reach the area, after he encountered the indigenous Pira-tapuya people. [6] In the lower reaches of the river valley the water flows over bunter sandstone and pebble beds. Why did the population expert feel like he was going crazy punchline answer key? The River Tees, in Northern England, rises on the eastern slope of Cross Fell in the North Pennines and flows eastwards for 85 miles (137km) to reach the North Sea between Hartlepool and Redcar near Middlesbrough. The Top 20 Rivers of England 1. This helps maintain water levels for amenity purposes and eliminates tidal effects further upstream. 3) Thats a very long distance, wouldnt you agree? The dorado catfish can grow to be over six feet long and migrates over 7,200 miles to complete its life cycle. The river now flows south past Croft-on-Tees before swinging northwards past Hurworth-on-Tees. REAlLY GOOD AND INTERESTING. Passing Ovington and Winston it runs parallel to the A67 south-east past Gainford and Piercebridge to Darlington, passing under the A1 and A66. In the early nineteenth century the river was straightened, saving time and money in navigation. Some rivers have very strong currents. Upper course. In its lower reaches it now forms the boundary between the ceremonial counties of County Durham and North Yorkshire, while in the highest part of its course it forms the boundary between the historic counties of Westmorland and Durham. When you visit the site, Dotdash Meredith and its partners may store or retrieve information on your browser, mostly in the form of cookies. Between 65 and 145 million years ago, the Amazon River flowed towards the Pacific Ocean, in the opposite direction it flows today. This is usually because of a high amount of rainfall. They write new content and verify and edit content received from contributors. What are facts about the river tees? This can create canyons, valleys and gorges! In its lower reaches it now forms the boundary between the ceremonial counties of County Durham and North Yorkshire, while in the highest part of its course it forms the boundary between the historic counties of Westmorland and Durham. Near the mouth of the River Tees is the large dry dock facility of ABLE UK, named TERRC (Teesside Environmental Reclamation and Recycling Centre), used to dismantle or oil rigs and other large vessels. He went down 5 floors up 6 floors and down 7 floors. Like a wide net, the Amazon River watershed collects rainfall from miles around the Amazon River, including the Andes Mountains and the Amazon Rainforest. explore and learn delivered straight to your inbox.
For around 100 years this species was absent from the estuary but have now returned and can be seen on the flats at Seal Sands. "Contribution Of The Amazon River Discharge To Regional Sea Level In The Tropical Atlantic Ocean." It is expected that two million tonnes of material will be dredged to allow GE Renewable Energy to load huge wind turbine blades onto ships. Facts about the River Tees you may not know: The Tees travels 137km from source to sea. IUCN Red List Of Threatened Species, 2018, doi:10.2305/iucn.uk.2018-2.rlts.t10831a50358152.en, Cunha, Hayde A. et al. 13) Sadly, our rivers and waterways are being polluted by chemicals, sewage and household waste, which can cause serious harm to animals and humans, too. Since the 1995 flood event a new flood defence scheme costing 2.1 million has been built. Weve screened for over 1,000 potential chemical contaminants but found no anomalies that could lead to an event of this scale. Things to do nearby. Providing routine patrols on the River Tees to ensure water safety and to assist emergency services as requested. Cookies collect information about your preferences and your devices and are used to make the site work as you expect it to, to understand how you interact with the site, and to show advertisements that are targeted to your interests. Nearly two years later, the father-son duo reached the Amazon River. Between Stockton-on-Tees and Middlesbrough, the river previously meandered first south and then north of its current channel. The Canal & River Trust are responsible for the 22 miles from Worsall, (the highest tidal point in the river until the barrage was built) through Yarm and up to and including the iconic Tees Barrage in Stockton-On-Tees. It forms the boundary between the historic counties of Yorkshire and Durham. Neotropical Ichthyology, vol. In the 20thcentury the river also became important to the developing chemical industry, contributing particularly to the development of Imperial Chemical Industries (ICI) who used reclaimed land on the north bank for import/export facilities.[24]. "[32], In early February 2022 it was reported that, "Defra and partner agencies have completed a thorough investigation of the cause of dead crabs and lobsters which were found washed up on the North East coast between October and December 2021. By the end of the trip, they had canoed over 12,000 miles. The lack of bridges is due, in part, to the seasonal changes in the Amazon River bed. From reservoirs to club-managed canals and river stretches - find your nearest place to fish, Download your free guide today and start exploring the waterway nature near you. Any bridge to cross the Amazon River would need to be incredibly long to have sure footing. Be sure to check if your parent or guardian is okay with this first. This is caused by the strength and speed of the water. The dorado catfish (Brachyplatystome rousseauxii) is one of six species of "goliath" catfish found in the Amazon River. well done national Geographic your team has helped the environment to stay safe. Ye., and V. V. Neroda. A speed boat is the only means of transport across the river. 12. The river now flows south past Croft-on-Tees before swinging northwards past Hurworth-on-Tees. [10] It is at Croft-on-Tees that the River Skerne joins the Tees. 1. On average, models predict the Amazon River alone causes sea levels around the Caribbean to be around 3-cm higher than they would be without the Amazon's freshwater contributions. The Severn goes from Wales to Bristol and is 290km long. Close to where the B6277 road begins to run parallel to the river is the 69-foot (21m)[9] High Force waterfall. The Shambles was washed away and the towns main church was also damaged. The modern channel varies between about 110 yards (100m) and 220 yards (200m). Karenia thrives in temperatures between 20 and 24C [68 and 75F]. (2001), D.W. Pattenden, published by Cleveland and Teesside Local History Society, Last edited on 16 February 2023, at 18:49, Tees Barrage International White Water Course, Northeast of England Process Industry Cluster, Teesside Environmental Reclamation and Recycling Centre, Centre for Environment, Fisheries and Aquaculture Science, Environment Agency Tees Salmon Action Plan Map Page 4, Tees at Barnard Castle in Dales Area Artificial influences, "Construction starts on Quayside for the UK's premier offshore wind hub", "Creating UK's premier offshore wind hub through dredging", "Teesport gets fit for next generation as 22m upgrade takes shape", "MGT Power Q&A: All you need to know about Teesside energy plant", "EDF fully equips 62-MW offshore wind farm in UK report", "Appraisal of Sustainability: Site Report for Hartlepool", "Environment Agency confirm dead crabs and lobsters washed up on Yorkshire beaches were not killed by pollution", "Reason behind deaths of thousands of shellfish on North East beaches", "North East coast shellfish deaths blamed on harmful algae", "Are the dead shellfish littering our beaches evidence of a toxic waste cover-up? The section from Piercebridge to Hurworth flows over magnesian limestone. Cow Green reservoir was built in 1970 to provide water for the growing industries on Teesside. Some content of the original page may have been edited to make it more suitable for younger readers, unless otherwise noted. [21][22], The River Tees has been used for transporting industrial goods since the Industrial Revolution, particularly for the shipment of coal from the Durham Coalfields and also for the steel industries that later developed around Middlesbrough. A composite satellite map of the full White Nile. Most (over 99%, in fact) is in the salty ocean or frozen in our polar ice caps. In the mid-catchment, the valley widens out and channel slopes become much gentler. This page was last edited on 16 February 2023, at 18:49. The courses and key features of the River Tees. Thats the Congo River in Central Africa. [35], Peg Powler is a hag in English folklore who is said to inhabit the River Tees.[36][37][38]. 16, no. What are the advantages and disadvantages of video capture hardware? Our canals can change lives. [16] Before these cuts were made, the journey by sailing barge from Thornaby to the mouth of the Tees, allowing for tides and other factors, could take as long as seven days. Today Teesport is owned by PD Ports; it is located close to the North Sea and 3 miles (5km) east of Middlesbrough. The areas where large scale commodity chemical industry continues to be based are Billingham and Seal Sands, both on the north bank of the River Tees, and Wilton on the south bank. 11, no. Just past Yarm, the River Leven joins the Tees, before passing the settlements of Eaglescliffe, Ingleby Barwick and Thornaby-on-Tees. According to a 2018 study, the Amazon River's Andean headwaters have 142 dams, with an additional 160 dams proposed for construction. Applied Sciences, vol. [28], Near the mouth of the River Tees is the large dry dock facility of ABLE UK, named TERRC (Teesside Environmental Reclamation and Recycling Centre), used to dismantle or oil rigs and other large vessels. There are also few roads connecting to the Amazon River, with the Amazon River itself used for most people's transportation needs. The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user. The waterfall is 20m in height. The Centre for Environment, Fisheries and Aquaculture Science (Cefas) labs were also testing crustaceans for disease. Found in north Africa, it flows through 11 different countries and stretches a whopping 6,695km - that's as long as 65,000 football pitches! Submit it below and we could use it on a future Top 10 Facts page! Providing education to the public who may be using the river to ensure safety and compliance see our stoppages section here and plan your route. From this point downstream the Tees forms the boundary between the traditional counties of Durham and Yorkshire almost without a break, although since 1974 much of it lies wholly in Durham. 1) The Nile River is widely accepted as the worlds longest river. Ask a parent or guardian to check it out first and remember to stay safe online. Have you ever wondered where the water in the oceans and sea is from? Every September, millions of people from more than 70 countries celebrate World Rivers Day. In blackwater rivers, found in swamps and wetlands, the waters look like strong black tea. Below Viewing Hill, it turns south to the Cow Green Reservoir constructed to store water to be released in dry conditions to satisfy the industrial need for water on Teesside. He was then on the second floor. [4] Before the reorganisation of the historic English counties, the river formed the boundary between County Durham and Yorkshire. Now nearing the sea, the Tees becomes an important commercial waterway, with the ports of Stockton-on-Tees and Middlesbrough on its banks. Geology, vol. It starts in Cross Fell (a mountain) in the Pennines, and opens up into the North Sea. 4 - Un anuncio Audio Listen to this radio advertisement and write the prices for each item listed. A 95% decline in the lobster and crab catch was noticed by those employed in the local fishing industry. 364-374., doi:10.37445/adiu.2019.02.29, Anderson, Elizabeth P. et al. The Tees Barrage. Populations of the Amazon River dolphin are particularly hurt by the damming and pollution of the Amazon River. All 10 million people who live on the banks of the Amazon River can only cross the freshwater flow by boat. This locality has lead and ironstone resources. 15) Did you know theres a day dedicated to our planets wonderful waterways? The vast majority of these products are still related to the steel and chemical industries made by companies that are members of the Northeast of England Process Industry Cluster (NEPIC). The rise of the Andes Mountains in the west forced the Amazon River to reverse course. Or take a stroll over the footbridge across the impressive Tees Barrage itself. 1, 2018, p. The pews were upturned and tossed about, the pulpit was overturned and several windows were shattered. Thats 180 miles! The River Tees was formed over 18,000 years ago in the Ice Age and has always been at the heart of Teesside. Ever heard of Londons , By entering your email address you agree to our. In the future due to climate change this number is expected to increase to 11,230.
[31], By late November the crustacean die-off had spread as far south as Robin Hood's Bay and was affecting catches in Whitby. 11) Some of the most fascinating river creatures include Amazon river dolphins (which have pink skin! "[33][34] In June 2022 George Monbiot wrote in The Guardian, "Astonishingly, although there is no evidence that it conducted such sampling, the government concluded not only that a bloom had occurred, but that it was caused by a particular, toxic species: Karenia mikimotoi. River Tees Diagram
"Damming Amazon Rivers: Environmental Impacts Of Hydroelectric Dams On Brazils Madeira River According To Local Fishers Perception." [2] Etymology edit Find out how our expert teams work together to make life better by water, We have vacancies across all of our waterways and in the offices, museums and attractions that support them. They then flow and bend (meander) as they cross the. 2, 2019, pp. Content is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. playing fields, parks, urban forests/walks etc.) bryophytes (mosses), and kelp Let us know if you have suggestions to improve this article (requires login). Corrections? Our open days offer a different perspective of our waterways, a behind-the-scenes look at the great work we do. The modern channel varies between about 110 yards (100m) and 220 yards (200m). The Amazon River's height rises substantially in the rainy season because around 40% of all of South America's water ends up in the River. To complete his amazing jungle journey, Martin swam ten hours a day for 66 days! It also provides an example of how river basins can be managed against flooding. Stockton was the lowest bridging point on the Tees until the 20th century, but there are now bridges at Middlesbrough. middlesbrough. There are many different species, depending on where the river is located. Teesport is built on reclaimed land on the south side of the Tees estuary below Middlesbrough. In the UK, some of the fish include trout, carp, minnow plus lots more. Low and high water levels are an average figure. Which is greater 36 yards 2 feet and 114 feet 2 inch? ), electric eels (which stun prey and predators with powerful electric shocks! On what floor did Moses get into the elevator. Rainfall in Bolivia, Columbia, Ecuador, Peru, and Venezuela also supplies the Amazon River with much of its freshwater. In fact, the shortest river is only 201 feet which is 61 metres! Find walks, activities and more within. In a battle against de Orellana and his men, Pira-tapuya men and women fought alongside one another. The River Thames is 215 miles (346 km) long, and is split into two sections, tidal and non-tidal. It is a regulating reservoir, storing water in times of plenty and releasing enough for the needs of industry in times of low flow. Also, High Force, one of the most prominent features on the river, is the largest. 565-572., doi:10.1093/jhered/esv040. In total there are almost 8,500 residential properties and over 1,200 commercial properties at risk of flooding. The Biggest Threats to Endangered Dolphin Species, 8. High Force Waterfall x. You will receive our UK newsletter. Archaeology And Early History Of Ukraine, vol. The head of Teesdale (the name of valley especially at this end), has a desolate grandeur, surrounded by moorland and hills, some exceeding 2,500 feet (760m). These cookies allow us to target other information on our website, like advertising, towards your interests. Just to the east of Middleton-in-Teesdale, the River Lune joins the Tees. There are also large industrial areas such as the ICI chemical works. Extensive tracts of the upper dales have been flooded to impound water for the needs of the industrial towns of Teesside, the urban area along the lower Tees. In the early years merchant ships left the River Tees after loading in Yarm and Stockton on Tees; but as merchant ships became bigger, these smaller docks were superseded by bigger and deeper docks in Middlesbrough, and later even further downstream at Teesport close to the mouth of the River Tees. The River Tees is located in the north of England. Do you want to learn about rivers? The dale widens below Cauldron Snout, and trees appear, contrasting with the broken rocks where the water descends over High Force. 15 facts about rivers 1) The Nile River is widely accepted as the world's longest river. "Amazon River Reversed Flow." of the River Tees is located in the Pennines and the river flows east to its mouth. The head of the valley, whose upper portion is known as Teesdale, has a desolate grandeur, surrounded by moorland and hills, some exceeding 2,500 feet (760m). A teacher walks into the Classroom and says If only Yesterday was Tomorrow Today would have been a Saturday Which Day did the Teacher make this Statement? AWESOME! Here are 12 amazing facts about the Amazon. "Scythian Amazon Burial In Cherkasy." Read about oceans and climate change here. Nine of the townspeople lost their lives in the floods. 3, 2018, doi:10.1590/1982-0224-20180033. The need for water further downstream also meant that reservoirs were built in the extreme upper reaches, such as Cow Green. Between 65 and 145 million years ago, the Amazon River flowed towards the Pacific Ocean, in the opposite direction it flows today. The Tees is a river in England. Its called the Roe River and is located in Montana, USA. The port at Teesmouth (Teesport) is the third largest port in the UK. The River Tees rises on the eastern slopes of the North Pennines and flows east for 85 miles to finally reach the North Sea near Middlesbrough. Emerging from the reservoir at Cauldron Snout the river traverses a series of hard black basalt and dolerite rocks that intrude through the softer limestone, in a succession of falls or rapids. These cookies are required to make our website work! The River Tees is located in the North of England. Land use in the west of the area is mainly moorland and pasture. Here are the complete facts about the River Nile below: Amazing facts about the River Nile 1: an international river The drainage basin of River Nile spans on 11 countries in Africa. The river flooded again in 1995 and 2015. The Lower Course. 6) Some record-breaking waterfalls formed by our planets rivers include. 14 Most Endangered Whales, Porpoises, and Dolphins, Freshwater Biome: Types, Plants, and Wildlife, 13 of the Most Bizarre Lakes in the World, 10 Remarkable Animals Found in the Rainforest, 12 Animals That May Have Inspired Mythical Creatures, Meet the Extraordinary Catfish That Travels the Width of South America, Contribution Of The Amazon River Discharge To Regional Sea Level In The Tropical Atlantic Ocean, Rivers Of The World: World's Longest Rivers, When You Get What You HavenT Paid For: Molecular Identification Of 'Douradinha' Fish Fillets Can Help End The Illegal Use Of River Dolphins As Bait In Brazil, Fragmentation Of Andes-To-Amazon Connectivity By Hydropower Dams, Damming Amazon Rivers: Environmental Impacts Of Hydroelectric Dams On Brazils Madeira River According To Local Fishers Perception, A Geomorphological Assessment Of Wash-Load Sediment Fluxes And Floodplain Sediment Sinks Along The Lower Amazon River, Toward More Sustainable River Transportation In Remote Regions Of The Amazon, Brazil, The Changing Course Of The Amazon River In The Neogene: Center Stage For Neotropical Diversification. 11, no. Below Barnard Castle the Tees meanders across a fertile clay plain to its estuary below Middlesbrough, where until the 19th century it entered the sea by shifting channels among extensive mudflats. Together, this freshwater flow accounts for nearly 20% of all river water that enters the sea. where it joins the North Sea. The Amazon River Once Flowed in the Opposite Direction, 2. River Tees, river in northeastern England, rising on Cross Fell in the northern Pennines and flowing 70 miles (110 km) east to the North Sea. The average water temperature on this coast in October is 13C [55F]. The river tees is located in northern england to the north of 70000000000000000000000000000000000000000 miles deep, the plants that live in the polar ice cap are algae, lichens, By using this site, you agree to the Terms of Use Privacy Policy. "Inia Geoffrensis." The River Tees is located in the north of England. Maps made prior to 1900 show that between Stockton and Middlesbrough the river flowed in a channel up to 330 yards (300m) wide in places, with many shoals and sandbars. In October 2021 the UK engineering company, GRAHAM, started work on the 1.2km South Bank Quay project to provide a deep water facility. eaao1642., doi:10.1126/sciadv.aao1642, Santos, Rangel Eduardo et al. Flood damage can run into hundreds of thousands of pounds. badgers, voles, newts and frogs! Grab your wet suit because as part of the huge redevelopment of the area, the Trust-owned International White Water Course underwent a 4.6m refurbishment. Between Stockton-on-Tees and Middlesbrough, the river previously meandered first south and then north of its current channel. From this point downstream the Tees forms the boundary between the traditional counties of Durham and Yorkshire almost without a break,[5] although since 1974 much of it lies wholly in Durham. While the Scythians were not a society of all women, as the Greek myth describes, women in Scythian society joined men in hunting and in battle. [5] At Rokeby the Tees is joined by the River Greta. Fishermen in Brazil's portion of the Amazon River, the Madeira River, already report negative effects on the system's fish, which scientists attribute to the installation of hydroelectric dams.