Question of the day: How is a Tucson flood like a redneck divorce?
description
Transcript of Question of the day: How is a Tucson flood like a redneck divorce?
![Page 1: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/1.jpg)
Question of the day: How is a Tucson flood like a redneck divorce?
![Page 2: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/2.jpg)
Rainfall in southern ArizonaA Case of Famine and Feast
April May June July Aug Sept Oct Nov Dec Jan Feb March
Precipitation Seasons in Southern Arizona
Monsoon Pacific storms
Pacific tropical storms
![Page 3: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/3.jpg)
Digital Elevation Map
Mogollon Rim
ColoradoPlateau
Basin and Range
You are here.
General airflow from Pacific
![Page 4: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/4.jpg)
Annual Precipitation
Sky Islands of SE Arizona
![Page 5: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/5.jpg)
Anatomy of River Valley• Main channel is normal course of river.• Floodplain is area covered during flood.• Over geologic time, river meanders over floodplain.
![Page 6: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/6.jpg)
Typical flood hazard is water covering the floodplain.
![Page 7: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/7.jpg)
Major Drainages of Tucson Basin
![Page 8: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/8.jpg)
Flow Gauge Records, Santa Cruz River
More frequent record flows post 1960
1900
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
Record Flows on Santa Cruz River
stre
am g
auge
inst
alle
d 19
131965 1977
1983
1983 flow = 53,000 cfs(Equivalent to 16 backyard swimming pools per second!)25% above previous 100-year flood estimates.
1914
![Page 9: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/9.jpg)
1983 Santa Cruz River @ Congress
![Page 10: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/10.jpg)
Santa Cruz River @ Congress
![Page 11: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/11.jpg)
Rillito at First Avenue, Oct. 1983Bank erosion along the outside of a meander bend
![Page 12: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/12.jpg)
Active river channel moves by bank erosion. This is principle flood hazard in Tucson.
Rillito Creek at First Avenue, Tucson, 1983
October, 1983 flood: 8 deaths, ~1000 injuries; $250 million damage.
![Page 13: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/13.jpg)
Increased frequency of record Santa Cruz flows since 1960.A. Climatic effect? Global warming? Enhanced El Nino?B. Urbanization? Urbanized desert increases runoff by four times compared to undeveloped desert.
![Page 14: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/14.jpg)
Effects of Urbanization on Stream FlowD
isch
arge
Time
Lag timeR
ainf
all
Streamflow
TimeD
isch
arge
Lag time
StreamflowRai
nfal
lUrbanization decreases lag time and increases maximum flow.
Before After
![Page 15: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/15.jpg)
Flood Forecasting
Recurrence Interval (yr)1 10 100
10
100
1000
10000St
ream
Dis
char
ge (
ft3/s
ec) ?
?
100-year flood projections depend on models of climate and hydrology.
![Page 16: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/16.jpg)
Flood Control MeasuresA. Structural Dams Channelization Diversion channelsB. Nonstructural Zoning and land-use restrictions Land acquisition programs Flood forecasting Public education
Pima County
![Page 17: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/17.jpg)
Soil cementing, Rillito @ Campbell
Confine the flow. Move the water out of Tucson ASAP.
![Page 18: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/18.jpg)
Q: How is a Tucson flood like a redneck divorce?
A: Sooner or later, someone’s going to loose a trailer.
![Page 19: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/19.jpg)
Teton Dam on Snake River
![Page 20: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/20.jpg)
Beginning of water piping and erosion of earthfill.
![Page 21: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/21.jpg)
![Page 22: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/22.jpg)
![Page 23: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/23.jpg)
![Page 24: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/24.jpg)
Complete failure
![Page 25: Question of the day: How is a Tucson flood like a redneck divorce?](https://reader036.fdocuments.in/reader036/viewer/2022062521/568167e0550346895ddd42ec/html5/thumbnails/25.jpg)
Permeable volcanic rock in footings of Teton Dam