Rivers of North America that can be researched are: Colorado Mackenzie-Peace Mississippi Missouri Rio Grande St Lawrence Yukon   19. Colorado River Library key words Colorado River, Grand Canyon Nation Park, North America – Rivers Library references Search Engine keywords Colorado River, Colorado River Basin Sites http://www.desertusa.com/colorado/coloriv/du_coloriv.html http://www.desertusa.com/colorado/intro/du_introcr.html http://dataweb.usbr.gov/html/crwq.html (River salinity) http://dataweb.usbr.gov/html/crbpcap.html (Colorado River Basin Project) http://www.tnrcc.state.tx.us/water/quality/data/wmt/mid_col_assmt.html (River basin assessments – cleanness of the river) http://www.hooverdam.com/workings/basinmap.htm (Map of the Colorado River Basin)   back to top 20. Mackenzie-Peace River Library key words Mackenzie River, Canada – Rivers Library references Search Engine keywords Mackenzie River, Alberta, Lake Athabasca, Great Slave Lake, British Columbia Sites http://www.state.ak.us/adfg/notebook/fish/pink.htm (Salmon fishing) http://www.virtualguidebooks.com/NWT/LowerMackenzie.html http://www.ec.gc.ca/press/mactwma_n_e.htm http://www.babelfish.com/travel.ab.ca/about_ab/AB_Geography.html (Explains background geography) http://www.mb.ec.gc.ca/water/boards/fa00s02.en.html (Environment Canada ) http://www.encyclopedia.com/articles/09941.html (Peace river) http://www.ualberta.ca/ERSC/pages/sem299.htm (Environmental concerns) http://www.canadianarchaeology.com/cmcc/mack.htm (Archaeological potential) http://www.cwra.org/news/arts/mrbb.html   back to top 21. Mississippi River Library key words  Mississippi River, North America – Rivers Library references 917.7 MOR Morgan, N. (1992), The Mississippi Search Engine keywords Mississippi River Sites http://www.nps.gov/miss/features/factoids/index.html http://www.greatriver.com/ http://whale.wheelock.edu/watersheds/mississippi/Mississippi.html http://geography.about.com/ http://cgee.hamline.edu/rivers/Students/GPT/trivia.htm http://rosecity.net/river/ http://rosecity.net/river/usmap.gif (Map) http://www.oldmanriver.com/   back to top 22. Missouri River Library key words Missouri River, North America – Rivers Library references Search Engine keywords Sites http://www.thinkquest.org/library/lib/site_sum_outside.html?tname=J001350&url=J001350/ (Thinkquest site)   back to top 23. Rio Grande Library key words Rio Grande River, Rio Bravo Library references Search Engine keywords Rio Grande Basin, Rio Bravo basin Sites http://ncgmp.cr.usgs.gov/ncgmp/newmex/newmex.htm http://www.riogrande.org/basin/basinmap.htm (Map and links) http://www.gorp.com/gorp/resource/us_nwr/tx_lower.htm http://www.txinfinet.com/mader/ecotravel/border/sabal.html (Good coverage of issues) http://www.sierraclub.org/outings/national/brochure/01443a.asp (Wildlife) http://www.tnrcc.state.tx.us/water/quality/data/wmt/rio_assmt.html http://www.utep.edu/rioweb/   back to top 24. St Lawrence River Library key words Saint Lawrence River, Canada – River, North America – Rivers Library references 917.14 WAT Waterlow, J. (1994), The St Lawrence Search Engine keywords St Lawrence River, St Lawrence River Basin, Great Lakes, Lake Ontario Sites http://www.great-lakes.net/ (Use the Search option to find more links) http://www.qc.ec.gc.ca/faune/biodiv/ http://www.qc.ec.gc.ca/faune/biodiv/en/table_contents.html http://www.seagrant.wisc.edu/communications/greatlakes/GlacialGift/lake_ontario.html   back to top 25. Yukon River Library key words Yukon River, North America – Rivers Library references Search Engine keywords  Yukon River, Yukon River Basin Sites http://www-water-ak.usgs.gov/Publications/Abstracts/2000.Abstracts/yukon_river.abs.htm http://www.mosquitonet.com/~dlacey/yrt.html http://canadafarnorth.about.com/library/pressrelease/bl-nwri050891.htm?once=true& http://publish.uwo.ca/~drbob/Yukon%20River%20Map%20and%20Streams_files/slide0001.htm http://www-water-ak.usgs.gov/ http://alaskan.com/docs/ak.html http://www.louisville.edu/library/ekstrom/govpubs/states/other/alaska/alaskaenv.html   back to top