GEOL 1 Lecture Notes - Lecture 21: Catawba River, North Carolina Highway 10, Coliform Bacteria

0 views2 pages
21 Sep 2020
Hao Tran
Physical Geology
Notes: Geol 1
Water Quality & Availability
We need about 50 L/day for person to live comfortably
Water Quality
Water that is safe to drink and tastes good enough
Almost all water supplies contain some dissolved material
Question is whether a given amount of material is safe
Biological Contamination
Microbes can entre drinking water supplies
Fecal Coliform Count
# of coliform bacterial / 100 mL
Coliform bacteria used as a proxy
Drinking water = 0
Swimming/etc = 200
Chemical Contamination
Chemicals commonly added to water via infiltration and runoff
Water Quality clean up
Clean-up possible but difficult because it takes time and money
Faster recharge = easier to clean once contaminant source is isolated
‘Fast’ recovery = matter of years
Water Availability
Legal fights among states over who gets how much water from a reservoir
‘Downriver’ states suing ‘upriverstates for taking too much
Upriver states ay old water use agreements are outdated
Case Study: SC vs. NC
10 million gallons from the Catawba River annually
Catawba River accounts for about half the water supply to the SC low
Taken before US Supreme Court
SC & GA are in contention over the Savannah River
Case Study: GA vs. TN
GA state legislature has proposed legislation to move the state border
about 1 mile north
Claim is based on an 1818 surveying error placing border at the wrong
Case Study: Everyone in the SW US. Everyone else in the SW
Colorado River
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 pages and 3 million more documents.

Already have an account? Log in

Get OneClass Notes+

Unlimited access to class notes and textbook notes.

YearlyBest Value
75% OFF
$8 USD/m
$30 USD/m
You will be charged $96 USD upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.