How humans affect rivers

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http://www.biosurvey.ou.edu/posters/EdGuidePDFs/PrairieRivers_edguide_riverhealth.pdf

Here is a list of some things that humans can do that have a negative impact on river ecosystems:

Damming

the levels of the water. Damming can be a great renewable resource for power, but it may destroy river ecosystems downstream. Damming can also be an effective flood control measure to ensure towns and neighborhoods are safe. Dams can obstruct the path of migratory fish and disrupt the life cycle of many different

Channelizing

This can have a major effect on floodplains.

– Modifying a stream or river into a pattern other than what may be its natural meandering.

Dumping

storm drain will flow directly into the river. Many people don’t realize this water isn’t "cleaned" before it runs right into a natural waterway.

– Discarding materials into a river. Any chemical, such as car oil or antifreeze, poured down a

Recreation

riding horses, walking a dog, fishing from a boat, or simply having a picnic. All of these activities could have a negative impact to river wildlife if not done carefully.

– Activities done for relaxation or enjoyment. Examples of river recreation are driving ATVs,

Littering

 

Domestic Animals
- Waste from livestock can be washed into rivers, adding excessive nutrients and illness causing bacteria. Pet waste can also be a problem, but they are more likely to impact the wildlife of the river by chasing or hunting.

– Careless disposal of trash and waste.– Obstructing the flow of a river or stream for energy production, to create a lake, or to controlaquatic organisms.

Cherie and Nicole