Hydrosphere

1. Hydrosphere 1:
Water Quality
1
HOOK VIDEO: Last Call at the Oasis
ppt. by Robin D. Seamon

2. Humans need freshwater sources
• Rivers and coastlines influence human
settlement
• We learned to control water for our benefit:
• Dams
• Irrigation systems
• Water treatment facilities
• wells
• recreation
2

3. 3
D I S T R I B U T I O N
http://www.sswm.info/category/concept/water-cycle
VIDEO: Where We Get Our Water (3:46)

4. 4
Availability Scale
1. vulnerable
2. stressed
3. scarce
VIDEO1: Struggle for Water (3min)

5. 5
http://latestnewslink.com/2014/12/lack-of-access-to-clean-water-hampers-fight-against-aids-in-africa-trfn/
VIDEO: UN Water Video (10 min)

6. 6
http://d11parents.com/2013/09/the-big-day-ios-7-roll-out-day/
http://www.waterprojectsinternational.org/
whywater.html
http://biologyandbiologics.blogspot.com/

7. 7http://www.globaled.uconn.edu/student_water/simulation/issues_areas.html

8. Potable Water LAB
CLASS DEMONSTRATION & LESSON:
Saltwater/freshwater demonstration
Book: If the World Were a Village- by, Shelagh Armstrong; 2002
Belize, El Salvador, & Mexico stories/pictures
HOMEWORK
WRITING & ILLUSTRATION:
Write a response to the book and demonstration from class about the world's water supply. Illustrate.
CONSIDER-
What percentage of the world’s water is potable?
How does your water supply differ from people in other countries?
Who’s responsibility is it to protect those drops of water?
What can you do each day to protect the world’s water supply?
BOOK- page 18- (as of 2002)
~ 75 % world's population has access to clean drinking water
in home or within a short distance
~ 25% do not; must spend most of the day finding water;
mostly girls and women
~ 60% world's population has to sanitation/sewage disposal-
public or household
~ 40% do not
~ 68% world's population can breathe clean air
~ 32% breathe unhealthy, polluted air
CLASS DEMONSTRATION SUMMARY- (numbers are approximated)
~ 2 L water on Planet Earth - salt and freshwater
~ 70 mL freshwater - about 3% of total water on Earth
~ 50 mL frozen - about 80% of freshwater frozen in icecaps & glaciers
~ 9 mL trapped underground - not all groundwater is reachable
~ 6 mL in atmosphere- part of the water cycle
~ 5 mL in plants & animals
? pollution
... 2 DROPS CLEAN, POTABLE DRINKING WATER FOR THE PLANET
8

9. 9
http://www.munciesanitary.org/pollutionprevention/?print=y
Evapotranspiration
Infiltration
Groundwater
Storage
Condensation
runoff
Evaporation

10. 10
SURFACE WATER

11. 11
Advance
Yadkin-PeeDee
River
BACK
Tributary- stream that flows into a lake or
larger stream/river

12. Watershed- river systems are divided into
watersheds; areas where water runs from higher
elevations into lower basins according to the
landscape
• LARGEST in US: Mississippi watershed
• OTHERS: Rio Grande watershed, Colorado
watershed
Divide- higher ground that separates watersheds
12VIDEO: What’s a Watershed (1min)

13. 13
https://thewatershed.org/about-us/what-is-a-watershed/
BACK

14. 14
River basin- portion of land drained into a river; river
is the lowest elevation point of the basin
Run-off: rainwater, storm water, or snowmelt that
flows across the surface of the land rather than
infiltrating the soil

15. 15
Davie County
Yadkin-Pee Dee River Basin

16. STREAM STAGES
Channel- path a stream follows
YOUTHFUL
• rapids & waterfalls
• fast-moving water
• steep slope
16
Channel
erosion
http://www.montcalm.org/planningeduc0042.asp
OLD
• broad floodplain
• meanders
• oxbow lakes
• meander scars

17. 1. Gradient- measure of change in elevation over
a certain distance
• Gradient erosive Energy
17
http://surfacewater.wikispaces.com/River+Gradient

18. 2. Discharge- amount of water a river carries;
storms, snowmelt
• Discharge erosive Energy
18
http://www.bigelow.org/virtual/water_sub2.html

19. 3. Load- materials carried by stream
• Fast moving water carries larger particles
• Bed load- bounces larger pebbles or
boulders
• Suspended load- small rocks & soil in
suspension (muddy)
• Dissolved load- minerals (Na, Cl…)
19
http://www.indiana.edu/~g103/G103lectures/rivers/wk6.html*VIDEO: Stream Flow (7min)

20. F O R M A T I O N S
Deposition- dropping of sediments (eroded
rock/soil particles)
Placer deposit- heavy minerals deposited where
current slows (gold)
Delta- mouth/end of a river, current slows,
sediments drop (mud)
- form new land, coast grows
20

21. 21
http://maps.unomaha.edu/becker/EnvGeoWk10.htm

22. Alluvial fan- stream over flat land, slows down,
drops sediments
Flood plains- high rain or snow melt overflows
rivers;
- sediment is deposited
- rich farm land
22
http://www.thisoldearth.net/Geology_Online-1_Subchapters.cfm?Chapter=5&Row=4VIDEO: Bill Nye: Rivers & Streams (23min)

23. 23
GROUND WATER

24. G R O U N D W A T E R
• Zone of aeration- upper layer of soil & rock;
water passes through
• Zone of saturation- water collects- spaces
between rock particles are filled with water
• Water table- where those two zones meet;
rises & lowers with rainfall & drought from
above
• Recharge zone- ground surface where water
enters an aquifer (how permeable?) 24

25. 25http://www.ustudy.in/node/2927

26. Aquifer- rock layer of limestone, sand/gravel
that stores groundwater
Porosity- more open spaces/pores can hold
water
• Depends on the size of rock particles
1. Same sized particles= high porosity
2. Different sized particles= low porosity
POROSITY DEMONSTRATION
26

27. Percolation & permeability- rock’s ability to let
water pass
• Larger particles increase permeability because
there are spaces for the water to flow
• Friction
27http://rmccs.org/sitecharacterization/experimental3.html

28. 28http://en.wikipedia.org/wiki/Aquifer
confined aquifer- completely filled with water
under pressure; separated by impermeable layer;
recharges slowly
unconfined aquifer- has water table, partially filled
with water; rapidly recharged by infiltrating
precipitation

29. Spring- water table reaches surface; can make a
lake
Artesian spring- spring whose water flows from
crack in cap rock of aquifer
• Sloping layer of permeable rock (aquifer)
sandwiched between two layers of
impermeable rock (cap rock)
29
http://www.health.state.mn.us/divs/eh/wells/waterquality/springs.html

30. 30
gaining streams- streams receive water from
ground water
losing streams- streams lose water to ground
water

31. Well- human-made hole, deeper than water table
• Must be drilled deep enough so that when
water table drops, well still has water
31VIDEO: What is groundwater? (5min)

32. 32
subsidence- pumping so much water from the
water table that the crust sinks (California)
saltwater intrusion- saltwater can enter
groundwater tables naturally or by human
pumping of the water table

33. 33
hot springs-
geothermal energy
heats groundwater
near magma bodies
geysers- hot springs
that periodically erupt
hot water and steam
Iceland

34. 34
karst topography- landscape of caves,
sinkholes, fissures, and underground streams
caves- naturally formed underground chambers
formed from chemical weathering;
• acidic ground-
water dissolves
limestone
• caves near the
surface may
produce sinkholes

35. 35
W A T E R
Q U A L I T Y

36. W A T E R Q U A L I T Y
• 3 % of Earth’s water is freshwater (drinkable)
• 75% of that is frozen
• Pollution- introduction of harmful substances
into the environment
• Point-source pollution: pollution from one
specific site (wastewater from a factory)
• Nonpoint-source pollution: pollution comes
from many sources (runoff from agriculture,
urban areas, land clearing, construction,
logging)
36
VIDEO: What is Nonpoint Source Pollution (2 min)

37. M O N I T O R I N G W A T E R Q U A L I T Y
PHYSICAL
turbidity,
temperature
CHEMICAL
measure pH, nitrates,
DO, metals
BIOLOGICAL
count species
37VIDEO: Ecosystems on the Edge (8min)

38. 38
HOW DO YOU DESCRIBE THE WATER?
Instream conditions:
• Litter/garbage- human trash
• Algae- floating, attached, color
• Water color- clear, muddy, milky, tea-colored,
red, gray, green black
• Water appearance- oily sheen, foam/bubbles,
scum
• Water odor- sewage, gas, rotten eggs, fishy,
chlorine, soapy
• Discharge pipes- storm drain, industry,
municipal wastewater, sewer,
PHYSICAL INDICATORS

39. Turbidity-
• Measure of the concentration of particles
suspended in water
• High turbidity = cloudy/ low light penetration
• Suspended sediments of silt, clay, wastewater,
high phytoplankton
39
http://www.learnnc.org/lp/editions/mudcreek/6594
*VIDEO: Turbidity (5min)

40. 40
Habitat structure
Natural river flow
is more productive
a habitat than
man-made
channels.
dams-
block flow of
water; waters
warm & become
dead zones

41. 41
Embeddedness: How much of the streambed that
is under sediment
affects ecosystem- fish, mussels, plants

42. 42
Riparian Habitat: land/bank between the water &
upland hills
Vegetation on
the bank
decreases
embededness

43. 43
Sediment impacts streams:
• Heat is absorbed by particles
• Clarity is lower
• Organic material can change the chemistry
• Extra fertilizer (phosphorus, nitrogen) causes
HABs (harmful algal blooms)
• Heavy metals leach into water
ppm- parts per million
*one inch in 16 miles *one ounce in 32 tons
*one cent in $10,000 *one minute in two years
THAT’s LIKE:

44. 44
DO- Dissolved
Oxygen
Temperature
• Affects DO levels:
• Cold water holds more O
• Thermal pollution: Factories increase lake
temperatures
• Loss of shade trees on riparian bank
REMEMBER: Colder water
absorbs more gas
2
Habitat Assessment
(14 min)

45. Respond to chemical, physical, biological change
• Fish
• Aquatic plants
• Insects
• Mussels
• Leeches
• worms
45
BIOLOGICAL INDICATORS

46. 46*VIDEO: Biotic Index (11min)

47. 47
Pathogens
Bacteria: e coli
• Enter water systems when septic systems leak
or municipal sewage systems fail & through
factory farm waste
http://www.cbsnews.com/news/20-sickened-by-e-coli-in-nc-toddler-dies/
VIDEO: Ganges Pollution (1:30)

48. Dissolved oxygen (DO)
• Organisms in water need oxygen
• Low DO can stress/kill organisms
• Pollution reduces DO
• Anoxia- lack of oxygen
48
CHEMICAL INDICATORS
1. Temperature (lower temp, more O2)
2. Altitude (pressure affects gas)
3. Plant growth (respiration, transpiration,
photosynthesis cycles gases)
4. Decay (cycles gases)
5. Turbulence (rough water, catches air bubbles)
*VIDEO: Dissolved Oxygen (13 min)

49. 49
1. Temperature (lower temp, more O )
 DO Thermal pollution
 DO changes with seasonal temp. changes
2. Altitude (pressure affects gas)
3. Plant growth (respiration, transpiration,
photosynthesis cycles gases)
• Time of Day:
 DO day b/c of plant respiration
 DO night
4. Decay (cycles gases)
 DO Lots of bacteria/decay
5. Turbulence (rough water, catches air bubbles)
What time of the day/year will water
have more DO due to temperature?
What time of the day/year will water
have more DO due to plants?
When will there be more DO due to
decay?
2

50. 50
pH- power of Hydrogen
• The acid/base balance
• Normal: 6.5-8.5
• Lower or higher pH disrupts availability of
nutrients in water system
VIDEO: Strengths & Weaknesses of acids & bases (3:50)
VIDEO: Crash Course Chemistry#30 pH & pOH (11min)

51. 51
NEUTRAL
Solubility of heavy
metals
Algal blooms
More Hydrogen Less Hydrogen
HIGHER
TEMP.
pH

52. 52
Dissolved solutions of water can be hard to
separate & so collect in Earth’s water supply.
A lot of metals are
TOXIC… can become
dissolved into
drinking water
http://thisismyfinalyearproject.blogspot.com/2010/07/critique-2-research-and-analysis.html
Industrial
storage/contaminated land
transpiration
Manure spreading
Uncovered road salt
Septic tank
Oil
storage
tanks
Public
Water
Pesticides
& fertilizers
Gas
station
landfill
Urban runoff
Leaking
sewers
plowing

53. 53
Eutrophication-
nutrient overload
Nitrates
• Soil particles
• Decay
• Man-made:
• Detergents
• Fertilizers
• Industry
waste

54. 54
NEWS- Flint, Michigan
• April 2014- Flint’s officials shift to Flint River
water from Detroit system to save money
• Foul-smelling tap-water reported; E.coli found;
corrodes metal; city tells residents to boil
water
• Lead- anti-corrosive chemicals were not added
to the water to prevent corrosion of old pipes
• Lead poisoning & brain damage
• Citizens on bottled water
• Charges being issued for government failure in
Flint

55. 55
LeeAnne Walters displays tap water samples at a public meeting in January
2015. Ryan Garza/Detroit Free Press/ZUMA
FLINT VIDEO

56. Y O U R
W A T E R
56

57. 57
Yadkin
River
Basin

58. 58
Y A D K I N R I V E R ‘ S C U R R E N T I S S U E S
Yadkin-PeeDee River currently supports 1.6 million
people
• Urbanization- building of roads, buildings, &
parking lots replace natural vegetation and soil
• High Rock Lake most threatened section
• High levels of nutrients, chlorophyll, turbidity, DO,
toxic levels of mercury in fish
• Swimming advisories in upper watershed
• Global climate change- droughts
• Coal Ash- Duke Power

59. 59
SOURCES OF THE POLLUTION:
• Point source- piped discharges from local
municipal wastewater treatment plants, local
industrial facilities, large storm water systems
• Non-Point source- timber harvesting, agriculture,
road, building & parking lot construction, failing
septic systems

60. 60
Industry in the Yadkin-PeeDee Watershed
• American Drew
• Weyerhauser
• ABTCO
• RJR Tobaccoville
• RJR Winston-Salem
• ASMO
• International Paper
• Freightliner
• Duke Power
• Arteva Kosa
• National Starch
• AlCOA
• Solite

61. 61
Coal Ash Spills-
• Duke Power spilled 39,000 tons of coal ash into the
Dan River Feb 2014 (Dan feeds into the Yadkin)
• 2015- it was discovered that 200 seeps were
occurring at 14 of Duke Power’s retired storage
plants- seeping 3 million gallons a day of coal ash
into the river
http://www.nbcnews.com/news/us-
news/82-000-tons-coal-ash-spill-plant-
north-carolina-river-n23401
http://www.nytimes.com/2014/03/01/us/coal-ash-spill-reveals-transformation-of-
north-carolina-agency.html?_r=0

62. 62
May 2015-
• Duke pled guilty to 9 violations of federal Clean
Water Act despite warnings of their pollution
• 32 ash dumps; 14 power plants: Eden, Moncure,
Asheville, Goldsboro, Mt. Holly
• Coal Ash Management Act 2014: Gives Duke until
2029 to shut down and cleanup all ash ponds
• 60,000 tons being removed from Dan River site per
month: ½ to landfill in Virginia; ½ stored on-site
• Currently paying $102 million in fines & working on
cleanup
VIDEO 1 Toxic Waste Spill in NC (24 min)
VIDEO: Dan River suffers major coal ash spill (2 min)

63. 63

64. Fracking-the process of injecting water &
chemicals at high pressure into underground shale
to fissure and release natural gas
64
Could this enter our
water supply?
VIDEO: How does Fracking work? (6min)

65. 65
East Coast
bedrock

66. 66
Fracking in NC (5min)

67. 67
GenX Pollution
• GenX- chemical used in Teflon
• Also known as PFA, PFC, PFOA, PFOS
• Untested health effects
• Has been found 11 NC Counties (Cape Fear
basin) in rivers, lakes, well water, food
(honey)
• Company Chemours has been accused of
dumping

68. 68
1/2018
Areas testing positive for GenX
This map of EPA data, as prepared by the Environmental
Work Group, shows in red the North Carolina counties
that have tested positive for GenX or similar chemicals
in the drinking water. Gray counties show where the
chemicals were not detected, and white counties were
not tested. The Environmental Work Group
VIDEO: Drinking water in
NC tested for

69. 69
Hurricane Florence
September 2018
• 36 inches of rain: wettest tropical storm in
the Carolinas (8th in the nation)
• Category 1 Hurricane at landfall but very slow
moving; (2-3 mph) dumped rain for days
• spawned tornados
• inland flooding, roads closed, no electricity
for the coast
• flooding = water spoilage
VIDEO NC’s Florence flood disaster growing (4 min)

70. 70
S T E W A R D S H I P

71. 71
S T E W A R D S H I P
Clean Water Act 1972- to restore and maintain the
health of US waters to include wetlands by
preventing point and nonpoint pollution
Safe Drinking Water Act 1974- regulates US public
drinking supply; amended in 1986 & 1996 to
protect drinking water & its sources: rivers, lakes,
reservoirs, springs & ground water wells
VIDEO2: Freshwater Scarcity

72. Sewage treatment plants- facilities that clean
waste materials out of water
1. Primary treatment
• screens collect solid particles
2. Secondary treatment-
• Water sent to aeration tank; mixed with
oxygen & bacteria; bacteria eats wastes,
use O2
• Water sent to chlorinator to disinfect
• Water released into river, lake, ocean
72
W A T E R T R E A T M E N T

73. 73http://water.me.vccs.edu/courses/env108/lesson1_2.htmVIDEO: Water Resource Recovery (10min)

74. W A T E R U S A G E
74
http://www.greenbiz.com/blog/2010/06/08/triple-threat-coming-water-crisis

75. 75
http://www.verdantcommunity.com/conserve-water.html

76. Agriculture- most of the world’s usage of water
• Evaporation
• Runoff
• Sprinklers
• BETTER: Drip irrigation systems- irrigate roots
76http://www.austinirrigationgroup.com/why-drip-irrigation-makes-perfect-sense-in-
dry-climates/
Industry
• 19% world water use
• Manufacturing goods
• Extract minerals
• Generate electricity

77. C O N S E R V I N G W A T E R A T H O M E
• Low-flow shower heads
• Low-flush toilets
• Native plants
• Shorter showers
• Turn off water while
brushing teeth
• Washing machine &
dishwasher full
before running
77
VIDEO: Water Crisis (3min)

78. CITIZEN POWER
• 1980’s citizens organized beach cleanups
• Semi-annual Adopt-a-Beach program
http://greatlakes.org/SAAB
78

79. 79
OCEANS & COASTAL
ECOSYSTEMS

80. 80
1. Draining of wetlands
• for farmland & development
• estuaries are crucial nurseries and migration
locations for millions of birds, fish, and insects
• peat- rich organic soil harvested for fuel &
fertilizer

81. 2. Sludge dumping- part of treated raw sewage
• By 1990 US had discharged 38 trillion liters of
treated sludge into coastal waters
• Pollutes beaches & estuaries; kills marine life
• Banned, but still practicedhttp://mugsysrapsheet.com/2013/03/
81

82. 3. Trash dumping-
• 1980’s scientists alarmed at type of trash
washing on beaches; bandages, vials of HIV
blood, syringes
• EPA investigated: 3 million tons of medical
waste/yr now has to go into landfills
• Dumping in deeper ocean still common
http://asklizweston.com/are-you-ready-for-a-zero-waste-lifestyle/
82

83. 4. Plastic-
• Plastic never decomposes
• Pacific garbage pack- kills wildlife
• microplastics
http://www.energydigital.com/greentech/1982/Plastic-
in-the-Ocean:-What039s-the-Solution
83
Plastic in Ocean VIDEO (3 min)