Avaliação do funcionamento de barraginhas em solos de textura média e arenosa.

The present study sought to evaluate the functioning of different infiltration dams in the community of Abóboras, in the Brazilian state of Minas Gerais, in soils of medium and sandy texture. The methodology established considered the following criteria to be evaluated: current conditions of size, soil grading for classification of textures and determination of basic infiltration rate calculations. The results indicated that the eight dams evaluated in the study are compromised, with those identified as number 3 and 8 having rates farther from the ideal (30 mm.h-1) - 11.33 mm.h-1 for dam 3 and 11.99 mm.h-1 for dam 8. Data obtained regarding soil textures and dimensions reflected a strong convergence to the infiltration rates, leading to the conclusion that more than 25% of the evaluated systems exhibited medium soil grading, and sediment accumulation due to lack of monitoring was evident, with a reduction in the mean depth from 1.5 m to 0.32 m in 11 years. It was possible to conclude that the soils of the systems have high infiltration capacities, however, their structures are operating with overload, requiring maintenance, which should be performed with a periodicity of 5 years. [ABSTRACT FROM AUTHOR]