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In the 30 veers since the Clean Water Act was passed, substantial progress has been made in the reduction of polhrtant point sources to waterways. The reduction of nonpoint sources of polhi- tion-pollution corning from many individual sources such as feedlots, cropland, lawns and streets-has been less successfiil. There are many - reasons for this; one of which is the lack of an ecological ' ~- ~ ~~ frarne;;-ork to provide gtrdat ,,., ~-= , , for nutrient management. ~~ = ~ The goal of our study, Hot- spots of Landscape Change: Identifying Ivey Linkages between Water Quality and Land Development Patients in Riparian Areas of the North Central Region, was to examine relationslnps between laheshore development and water clar- ity. To better understand factors related to chances in clarity, we developed whole- watershed phosphonts (P) balances for eleven recreational lakes in Minnesota that Stream phosphonts loading to a lake can be calculated from the amount of phosphonts entering the watershed; minus the ~unotmt that is deliberately exported from the watershed, minus the amount that nivr~i tenet radus receive ho ~e in r s The Universities Council on Water Resources recognized University of Min- nesota ahmtrtus, Xiangmin~ Pang, Ph.D., with the 200 Ph.D. DissertationAward in Water Policy and Socio-Economics. The title of T'ang's dissertation was "Water Shortages, Water Allocation, and Eco- nomic Growth: the Case of Cluna."After receiving ltis degree in Applied Economics in 200, Fang took a position as all econo- nust with the National Center for Injury had undergone substantial development since the 1980s. it - , ~' ~i - -_. _-_ .I . ~ - - - - -,- ~ ---~ i, _ _- `~ :~ i _:. Prevention and Control at the Centers for Disease Control. A Ph.D. DissertationAward Honorable Mention went to University of Mimlesota Water Resources Science ahumia, Mindy Erickson. Her dissertation was titled ~`Ar- setuc in Upper Michvest Ground Water: Occurrence and Geochernical Mobiliza- tion Mechanisms." Erickson received her Ph.D. in 200 and now works for the Min- nesota Department of Transportation. is retained in the watershed (stream P = input P -deliberately exported P - re- tained P). Major phosphonts _ inputs to watersheds dominated "- by human activity u7chtde at- mosphetic deposition, feed for fans animals; human food, and ~ agticulttiral and lawn fertil- ~ izer. Deliberate exports include ~ crops and animal products. Sewage is sometimes exported frcm one watershed and im- ported into another watershed, ;~~_~_~ ;t-here it is treated. Se;vage sludge tray then be exported from the watershed. In the eleven shady wa- I tersheds, phosphonts imports ~~ ~~ varied on an areal basis by about a factor of ten; with aQricultrtral watersheds having the highest phosphonts inputs. ~~®sp@~®~a.~s continued on page ~ In 1°is Issue 2 Around the State 3 Combined water conference 4 Ground water study 6 Community News 7 Upcoming Events i~neg~am ~~~~ernl~~r Z®®5 Phosphorus balances can relate lakeshor-e development to water clarity and help guide lake-management decisions.