68 



APPCKOIX I • nniMOMY Of JMCS R. KMR NMCH 9, 1993 



TMLE 1. IXAMPUS TO ILLUSTRATC TIC CTATUt Of U.S. ttVIIS MO TNEIR FLOOOnAIM 



1 Of 3.2 Mdlien alln of ri««r« in th* eontinantal Unitad ttatM, only a ar* haalttiy anough to ba 

 e«naiderad high quality and tiorthy of protaetlon (Mnk* 1990). 



1 Only ona laraa rivar (graatar than «00 ailaa long), ttia yaUatMtana, haa nat baan aavaraly 

 alterad. 



1 Of MdiiM aitad rivars (batiiaan 120 and 600 ailaa long), only «2 atudiad in tha Hatienai «<vara 

 Inventory have not been " ' 



1 60-SOX of riparian corridor* have baan daatroyad throughout the U. t. CMift 19B4) 



^ Over 70t of tha original floodpUin foroat* in tha U. (. ha* baan converted to urban and 

 agricultural uea (Ntxt 1968). 



T«LE 2. IXANPLIt TO ILU»T«ATf T« STATUS AW TtMOS IM Tl« AQUATIC IIOTA Of TK UMITiD STATIS, WITH 

 SPECIAL EMPMABIS ON RIVERS. 



1 A larger proportion of aq^tie organiaai <■ elaaaad aa rare to extinct (SiS of flah, 79X of 

 wiienid luaaal*. ai4 65X of crayfiah) than la true for tarraatrial organiaM (bird*, mmmU and 

 reptile* froa 11 to UX • Master 1990). 



1 20S of native flaha* of •»a«tam U. t. era extinct or e n dangered (Miller at al. 19i9). 



1 32X of Colorado River rwtiv* f iah ar* extinct, endangered or thraatanad (Carlson and Muth 1989). 



1 In th* Pacific Morth-aat, 2U native, naturally spauning Pacific aalaon and ataalhead atodc* fece 

 »* high or mderate riak of extinction, or are of apaeial eoneam" (Nehlaan et al. 1991). 



1 Sine* 1910, naturally apauning aalaon ruw in th* Callable river have declined by over 95X (Cbal 

 et al. 1969). 



1 During this century, the eo«i**reial fl*h harve*l* of aajor U. I. rivoro have declined by over SOX 

 (Mlesouri and Oalawere River*), ov*r 9SX (ColiaOi* R(v*r), and 100X (Illinoia Rivw) -- aa* Haea* 

 at si. 1989. Patrick 1992, Ebal ct *l. 1989, *nd Kerr at al. 198S). 



t In 1910, over 2,600 convrcial *u**el ficheraen operated on tha Illinoia River Mhlle virtually 

 none remain today. 



\ Since 18S0, aany flih *peelet have declined or disappeared frea rivara in tha United ttetes 



(MauMC River, Ohio - 45X, llUnol* River, llllnol* 67X • Karr at al. 1985; California rivara 61% 

 - Moyle and Utllian 1990). That eiMtslned with tha intraduetien of exotica ha* 

 hanio««niz*d th* aquatic biota of aany ragiona ( An average af 28X of tha flah apaelae In aajor 

 dralnaga* of VIrglnl* mf introduced • J*nkins snd turkhaad In praaa). 



1 Sine* 1933, 20X of ■olluacs in tht Tewna * *** River *y*t«n have baen loat (Uilliaaa et at. 1989). 



46X of r«Mining wlluset ar* endano*r*d or seriously d*pl*t*d throughout their range (Jankinson 

 1981). 



5 38 ctatea reported flah eonaiaption closur**, r*sirietlona, or adviaariee in 196S (Hoyer 1986). 

 «7 states in 1992. ContaKnitad flah pea* a haelth threet to Mlldllfe and people (Calbom et el. 

 1990, Cimlr^hai et al. 1990). That thraat include* interveneratlenal eBnaaqu«n r « t such •* 

 iiveired cognitive fiaietian!i« in infent* bom to ugaen t*e cansta* eentaainated flah (Jacobean 

 et al. 1990). 



