Simple linear correlations among runoff and rainfall erosivity parameters and soil losses caused by erosivity rainfall in Haplargids were studied. Data related to 1986-1990 were obtained in the Experimental Station at Sumé-Brazil. The rainfall erosivity parameters were the following: a) total height of the rainfall (P) in mm; b) maximum intensity (In): I5; I10; I15; I20; I25; I30; I35; I40; I45; I50; I55; I60 and I120 minutes in mm h-1, respectively; c) total kinetic energy by the Wischmeier & Smith's and by the Wagner & Massambani's methods in MJ ha-1 (KE and KEW); d) kinetic energy of intensities higher than 10 mm h-1 (KE > 10 and KEW > 10) in MJ ha-1; e) kinetic energy of intensities higher than 25 mm h-1 (KE > 25 e KEW > 25) in MJ ha-1; f) total kinetic energy products by maximum intensities rainfall (EIn): EI5, EI10; EI15; EI20; EI25; EI30 EIW30; EI35; EI40; EI45; EI50; EI55; EI60 and EI120 in MJ mm ha-1h-1, respectively; g) total height of rainfall products by maximum intensity rainfall (PIn): PI5, PI10, PI15; PI20; PI25; PI30; PI35; PI40; PI45; PI50; PI55; PI60 and PI120 in mm² h-1, respectively; and h) runoff volume (Vu) in m³. The runoff erosivity parameter (Vu) best estimated (r = 0.812) the soil losses in Sumé-PB. Among rainfall erosivity parameters, the PI25 type (r = 0.753) was best correlated with soil losses. The Wischmeier & Smith's and the Wagner & Massambani's equations used to calculate the total kinetic energy rainfall presented the same degree of precision in estimating soil losses.
erosion; rainfall erosivity parameter; runoff erosivity parameter; runoff-rainfall erosivity parameter; erosion