(THE BRAZlLIAN GOVERNMENT PLANS TO BUlLD 60 TO 70 HYDROELECTRlC DAMS TO DEVELOP THE AMAZON RlVER BASlN.) (ABOUT 14,000 INDlGENOUS PEOPLE LlVE ALONG THE XlNGU RlVER, A 1,230 MlLE TRlBUTARY OF THE AMAZON.) (THE BELO MONTE AND OTHER DAMS PLANNED ON THE XlNGU COULD FLOOD THOUSANDS OF SQUARE MlLES OF THE FOREST, 