Monday, December 18, 2023

So Goes the Colorado

 

Click to enlarge -- notice the tan hash-marked areas.


I follow the Facebook page Geomorphology Rules because it so often features maps like this one -- maps that tell a provocative story. I also follow it because my master's research was in fluvial geomorphology and I enjoy staying in contact (pun intended) with that quirky discipline that lies at the juncture of geography and geology. Plus which, geographer Kathleen Nicoll runs the site with equal measures of wit and wisdom.

The first thing I noticed about this map is that it identifies the Grand Canyon as a convenient divide between the upper and lower portions of the Colorado River drainage basin. I later noticed that this map (or perhaps it is a map excerpt) has no title or discernible producer.

But the most important thing about this map is that it explains why the Colorado River does not reach the sea most of the time. Most maps show it connecting to the Gulf of California, but in real life this is rare. Where Arizona, California, and Baja California meet, the river is scarcely 100 feet wide; immediately south of that it is not much wider than the small living room in which write this. 

And a few miles south of that, the bridge ("puente") that carries Mexico's Route 2 over the river is bridge over sand most of the time.
I have often explained this in terms of the unfair division of the river's water resources between the upstream and downstream neighbors. Octavio Paz famously lamented, "Alas, poor Mexico! So far from God and so close to the United States!" A century ago, the neighbors agreed to go "halfsies" on the basin's water, with each being allocated 7 million acre-feet of the total 14 million discharged annually. The agreement was made during an unusually wet period, but the U.S. always takes its half, since Mexico cannot come upstream to get it. Agribusiness and urban areas in the basin -- including the one I was living in when I learned all of this -- reduce the river to a trickle.

The maps makes clear, however, that this is not a full explanation of the problem. Rather, it is the interbasin transfers to the relatively small areas that essentially surround the basin. These are small regions to which water that would otherwise be making its way toward the aforementioned bridge is instead crossing the divide to supply cities, farms, or both in other basins.

The most notorious of these arrangements is the focus of the 1974 film Chinatown, but Los Angeles is far from the only culprit at this stage.


Blog Ideas

coffee (25) GEOG381 (24) GEOG388 (23) GEOG470 (18) climate change (17) GEOG130 (16) geography (16) GEOG332 (13) GEOG431 (12) musica (11) GEOG 381 (9) Mexico (9) Brazil (8) GEOG286 (8) Texas (8) education (8) migration (8) GEOG298 (7) borderlands (7) GEOG199 (6) GEOG331 (6) Massachusetts (6) US-Mexico (6) deBlij04 (6) immigration (6) GEOG 286 (5) GEOG 332 (5) GEOG287 (5) climate justice (5) cultural geography (5) fair trade (5) food (5) geographic education (5) nicaragua (5) water (5) Arizona (4) GEOG 130 (4) GEOG 171 (4) GEOG171 (4) GEOG295 (4) Safina (4) africa (4) deBlij05 (4) music (4) politics (4) Bolivia (3) Boston (3) COVID-19 (3) Detroit (3) Ethiopia (3) Managua (3) Obama (3) border (3) cartography (3) drought (3) land protection (3) libraries (3) pesticides (3) suburban sprawl (3) trade (3) unemployment (3) Alaska (2) Amazon (2) Bridgewater (2) Canada (2) Chiapas (2) China (2) Colonialism (2) EPA (2) EarthView (2) Economy (2) Environment (2) GEOG 199 (2) GEOG 287 (2) Google Maps (2) Government (2) Hawaii (2) India (2) Lexington (2) Maldives (2) Mozambique (2) NOLA (2) NPR (2) National Monuments (2) National Parks (2) New Orleans (2) Religion (2) Rio Grande (2) Taunton River Wild and Scenic (2) Tex-Mex (2) The View from Lazy Point (2) United States (2) Venezuela (2) anthropocene (2) cape verde (2) censorship (2) central america (2) chocolate (2) corn (2) deBlij07 (2) deforestation (2) demographic transition (2) demography (2) education reform (2) employment (2) environmental geography (2) film (2) forest fire (2) global warming (2) islands (2) librarians (2) maps (2) organic (2) peak oil (2) refugees (2) sense of place (2) soccer (2) sustainability (2) television (2) water rights (2) whales (2) #bbc (1) #nicaragua (1) #sosnicaragua (1) #sosnicaragua #nicaragua (1) 100 Years of Solitude (1) ACROSS Lexington (1) Accents (1) Adam at Home (1) Alice (1) Alt.Latina (1) American Hustle (1) April (1) Association of american Geographers (1) Audubon (1) Aunt Hatch's Lane (1) BSU (1) Baby Boomers (1) Banda Aceh (1) Bay Circuit Trial (1) Bechtel (1) Beleza Tropical (1) Belize (1) Beloit College (1) Ben Linder Cafe (1) Bet The Farm (1) Bhopal (1) Biafra (1) Bikeway (1) Bikini (1) Bill Gates (1) Bill Moyers (1) Boeing 777 (1) Brazilian (1) Brazilianization (1) Bridge (1) British Columbia (1) Brockton (1) Bus Fare (1) Bush (1) Cabo Verde (1) California (1) Cambridge (1) Cape Cod Bay (1) Carl Stafina (1) Catholic (1) Ceuta (1) Chalice (1) Chipko (1) Citgo (1) Climate risks (1) Cochabamba (1) Colombia (1) Common Core (1) Commuter (1) Computers (1) Cuba (1) Cups and Summits (1) Dallas (1) David Byrne (1) Deans Beans (1) Delaware Valley (1) Dunkin Donuts (1) Earth Day (1) Earth View (1) Easton (1) El Salvador (1) Elizabeth Warren (1) Ellicott City (1) Emilia Laime (1) English-only (1) Environmental History (1) Euphrates (1) European Union (1) Evo Morales (1) FIFA (1) FYS (1) Fades Out (1) Farms (1) First-Year Seminar (1) Food Trade (1) Frederick Kaufman (1) French press (1) Fresh Pond Mall (1) GEOG 388 (1) GEOG 431 (1) GEOG 441 (1) GEOG213 (1) GEOG490 (1) Gabriel García Márquez (1) Garden of Gethsemane (1) Gas wells (1) Gateway Cities (1) General Motors (1) Gini Coefficient (1) Girl in the Cafe (1) Google (1) Gordon Hempton (1) Gravina Island Bridge (1) Great Migration (1) Great Molasses Flood (1) Guy Lombardo (1) Haiti (1) Hawks (1) Heart (1) Higher Education (1) History (1) Holyhok Lewisville (1) Homogenous (1) Honors (1) How Food Stopped Being Food (1) Hugo Chavez (1) IMF (1) Iditarod (1) Imperial Valley (1) Income Inequality (1) Indonesia (1) Iraq (1) Irish (1) Japan (1) Junot Diaz (1) Kenya (1) Ketchikan (1) Key West (1) Kindergarden Students (1) King Corn (1) Kiribati (1) Latin America (1) Limbaugh (1) Literature (1) Living On Earth (1) Louisiana (1) Love Canal (1) Luddite (1) M*A*S*H (1) MCAS (1) MacArthur Genius (1) Maersk (1) Malawi (1) Malaysia (1) Malaysian Air Flight 370 (1) Mali (1) Manu Chao (1) Map (1) Marblehead (1) Mary Robinson Foundation (1) Maryland (1) Massachusetts Bay Colony (1) Math (1) Maxguide (1) May (1) Maya (1) Mayan (1) Mayan Gold (1) Mbala (1) McDonald's (1) Melilla (1) Mexicans (1) Michael Pollan (1) Michelle Obama (1) Micronesia (1) Military (1) Military Dictatorship (1) Minuteman Trail (1) Mongolia (1) Monsanto (1) Montana (1) Morocco (1) Mount Auburn Cemetery (1) Muslim (1) NPS (1) Nantucket (1) National Education Regime (1) Native American (1) Native Americans (1) New Bedford (1) New Hampshire (1) New York City (1) New York Times (1) Nigeria (1) No Child Left Behind Act (1) Norquist (1) North Africa (1) Nuts (1) Oakland (1) Oaxaca (1) Occupeligo (1) Occypy (1) Oklahoma (1) Oklahoma City (1) Oppression (1) PARCC (1) Pakistan (1) Pascal's Wager (1) Peanut (1) Pearson Regime (1) Philadelphia (1) Philippines (1) Pink Unicorns (1) Poland (1) Portuguese (1) Protest (1) Public Education (1) Puebla (1) Puritans (1) Quest University (1) Rachel Carson (1) Reading (1) Republican (1) Retro Report (1) Robert Reich (1) Rock Legend (1) Ronald Reagan (1) Rondonia (1) Rosa Parks (1) SEXCoffee (1) Safety (1) Samoza (1) Sandino (1) Sara Vowell (1) Save the Children (1) Scotch (1) Scotland (1) Seinfeld (1) Senegal (1) Sergio Mendes (1) Severin (1) Sharrod (1) Silent Spring (1) Sinatra (1) Slope (1) Smokey the Bear (1) Somalia (1) Sombra (1) Sonora (1) Sonoran desert (1) Sonoran hot dog (1) South America (1) Spain (1) Stairway to Heaven (1) Storm (1) Suare Inch of Silence (1) Sumatra (1) Swamp (1) Tacloban (1) Tanzania (1) The Amazon (1) The Amazon Trail (1) Tigris (1) Tucson (1) Tufts (1) U.S Federal Reserve (1) U.S Government (1) U.S. economy (1) USDA (1) USLE Formula (1) Uganda (1) Unfamiliar Fishes (1) Union Carbide (1) Vacation (1) Vexillology (1) Vietnam (1) ViralNova (1) WNYC Data News (1) Wall Street (1) Walsenburg (1) Walt Disney (1) Walt and El Grupo (1) Ward's Berry Farm (1) West (1) Whaling (1) Wilson (1) Winter Storm Saturn (1) Wisconsin (1) World Bank (1) Xingu (1) YouTube (1) Zombies (1) agriculture (1) antitrust (1) aspen (1) austerity (1) aviation (1) banned books (1) bark beetle (1) bean (1) bicycle (1) bicycling (1) bike sharing (1) binary (1) biodiversity (1) bioneers (1) books (1) boston globe (1) cacao (1) cafe (1) campaign (1) campus (1) cantonville (1) capitals (1) carbon dioxide (1) carbon offsets (1) carioca (1) cash (1) cashews (1) census (1) chemex (1) chemistry (1) chronology (1) churrasco (1) civil rights (1) coffee grounds (1) coffee hell (1) coffee prices (1) coffee quality (1) college (1) compost (1) computerized test (1) congress (1) conservation commission (1) corporations (1) countries (1) cubicle (1) dams (1) deBlij06 (1) deBlij08 (1) death (1) deficit (1) development (1) dictatorship (1) distracted learning (1) distraction (1) drug war (1) dtm (1) earth (1) economic diversification (1) economic geography (1) election (1) embargo (1) energy (1) enhanced greenhouse effect (1) environmentalist (1) ethnomusicology (1) exremism (1) failed states (1) farming (1) financial crisis (1) football (1) forestry (1) forro (1) fracking (1) free market (1) free trade (1) fuel economy (1) garden (1) genocide (1) geography education (1) geography games (1) geography of chocolate (1) geography of food (1) geologic time (1) geotechnology (1) gerrymandering (1) global pizza (1) globe (1) goodall (1) green chemistry (1) ground water (1) guacamole (1) guatemala (1) high-frutcose (1) home values (1) hospitality (1) hourglass (1) housing (1) illegal aliens (1) income (1) indigenous (1) interfaith (1) journalism (1) kitchen garden (1) labor (1) landscape ecology (1) language (1) libertarianism (1) library (1) linguistics (1) little rock (1) llorona; musica (1) macc (1) maccweb (1) magic realism (1) maple syrup (1) mapping (1) masa no mas (1) massland (1) medical (1) mental maps (1) mi nina (1) microlots (1) microstates (1) mining (1) mltc (1) monopoly (1) municipal government (1) nautical (1) neoclassical economics (1) new england (1) newseum (1) newspapers (1) noise pollution (1) pandas (1) petroleum (1) piracy (1) pirates (1) poison ivy (1) police (1) political geography (1) pollution (1) provincial government (1) proxy variables (1) public diplomacy (1) quesadilla (1) rabbi (1) racism (1) real food cafe (1) regulations (1) remittances (1) resilience (1) resistance (1) respect (1) rigoberta menchu (1) rios montt (1) romance (1) roya (1) runways (1) russia (1) satellites (1) science (1) sea level (1) selva negra (1) sertao (1) sertão (1) sex (1) sex and coffee (1) simple (1) sin (1) smokey (1) solar (1) solar roasting (1) south africa (1) sovereignty (1) species loss (1) sporcle (1) sports (1) state government (1) taxes (1) tea party (1) teaching (1) textile (1) texting (1) tortilla (1) training (1) transect; Mercator (1) travel (1) triple-deckers (1) tsunami (1) urban geography (1) utopia (1) vermont (1) vice (1) video (1) wall (1) water resources (1) water vapor (1) whiskey (1) whisky (1) widget (1) wifi (1) wild fire (1) wildfire (1) wildlife corridor (1) wto (1)