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BlACK, CROW and EIDS~ESS INC. 197:': -Water pollution abat~ment technology: capabilities and costs, urban runoff-. National Commission on Water Quality, Washington. Re'Oort NCWQ-75/14; 380pp. (NTIS PB-247 391). K'?y words: urban runoff: pollution abatement: erosion~ m~thematical mo- dels: urban hydrology; waste water treatment: w3ter pollution control: suspended solids. This study shows that urben storm water runoff contributes significantly to the annual pollutunt lo~ds of th~ nation's waters in urban areas. Susp~nded sol- ids and oxygen demand characteristics of urban runoff appear to be the most significant contributions to pollution when compared with other publicly owned sources. The composition of urban storm water runoff was found to vary widely in polJutant constitu~nts for many poorly defined reasons. The tre- atment technology b<:st suited to the abate~ent of urban storm water pollu- tion re~ains to be dev~loped. Abatement of urban storm wnter pollu- tion to a level equivalent to secondary treatment would represent u commitment of approximately 15~ to 170 billion dollars. BIACK~'WOD, K.R. 1974: -RunOff wnter quali- ty of three Tucson watersheds". Arizona Univ~rsity, Tucso~, Department of Civil Engineering, Research Report, Oi<RT B-023-~RIZ (4), 39pp. (NTIS PB-240287). Key words: management: noffi dc1til urbanisation; storm. runoff: collection. watershed urban ru- An interdiSCiplinary study of three watersheds was conducted during the years of 1969 through 1973 by the Water Re~ources Research Centre, university of Arizona, to monitor the quantity and quality of urban runoff in Tucson, Ari- 7.ona. Thre~ w~tcrsheds 3re drained by nearly natural drainage chann~l~. Plow was measured by concret~ critical flow measuring flumes. QU3lity was deter- mined through tests run on m~nually collected sa~ples taken at various in- tervals throuQhout runoff events. Because of a rapidly burgeoning popula- tion and a growing recognition of the limited water resources available to the Tucson Metropolitan area, many suggestions for the use of storm water runoff bave been made. The water qual- ity of the runoff water is pre5ented in order to enable a better cvalu~tion of these proposals to be made. The study was divided into three sections. The first compared the land use and geolog- ical characteristics of the three wat- ersheds in an attempt to determine their effect on water quality. The second section examined the variation in average water quality betw~cn storms for each watersh~d. Characteristics of the storms were examined to determine the possibility of predicting the water quality. Finally, water ~uality varia- tions during a storm were investigated to determine if they followed a prcd- ict~ble pattern, and whether signifi- cant improvements in aVer~g~ quality of the captured water could be obtained if .' some of th~ runoff water was byp~ssed. BLASZCZYK, P. 1977: "Urban runoff res,:,arch in Polanr:l. Report 11, 1975-77-. ASCE, New York, Urban Wat~' Resources Re- search Council, Technical ~~mo., TM-IBP-ll, 12pp. . Key words: urban runoff: computer mo- dels: mathematical models. MOQeling and catchment res~arch for un- derground conduit drainage systems in Poland is emphasised. , BLEEK, J. 1975: -Synthetic unit hydrograt;'h procedures in urban hy~rology". Paper in proc~edinqs of the National Sym~osi- urn on Urben Hydrology ~nd Sediment Con- trol, University of K~ntucky, [~xing- ton, Ky. Key worns: storm runoff: hydrogre:phs; urbanisation; mathematical models. Synthetic unit hydrogr~ph proc~~ures provide a convenient means of esti~at- log the increasing storm water runoff from a catchment th~t is undergoing urb~n d~velopment. There are two b~sic approaches to the synthetic unit hydro- graph technique: the 'analysis' 29pro- ach, relating unit hydrograph charac- teristics directly to c~tchment par~~e- ters and the 'synthesis' anproach, cor- relating the coefficients of a lin~ar conceptual model with catchment ~~d storm-parameters. The application of both these procedures to urban catch- ments in southeast England has shown that both m~thoDs have t~~ir advant~q~s but the anaJysis approach most consis- tently reproduces th~ unit hydroqrn~hs of these particul~r catchments. SOCH, P. 1958: -A study of urb?n rainf~ll runoff relationships-. Ph.D Thesis, John Hopkins, University, Baltimore, ~d. Key words: rainfall-runoff relet ion- ships: urban runoff: data collection: model studif's. Re~orts on a study of flows into storm drains and inlets in the city of Balti- more. The data were collecte~ using inlet weirs and tipping bucket rain- gauges with as ~any =s nine inlet are~s recorded simultaneously on one chart. The "Inlet Method~ proposed her~in re- port~dly gives much more accurate re- sults than the -Rational Method~ by ~t- tenuating estimated inlet flows to cal- culate di$ch~rge at any point in th~ system. The primary functions are the degree of imperviousness and m?qnitude of the rainfall during the most intense part of thunderstorms. , . BOESCH, B.E. and EAKER, C.A. 1972: -Urban erosion - practic~l alternatives-. In, Proceedings symposium on urban cainfall manag~ment problems, University of K~n- tucky, lexington, Ky: Technical Report UKY 51-72-CE16, p96-107.