Urine collection systems and related methods in which the urine collection system comprises: (A) a perforated sheet that includes a plurality of apertures that allow for one-way flow through the apertures, and (B) a bottom urine collection sheet, positioned below the perforated sheet, comprising one or more grooves, where each groove has a respective groove length, groove width, and groove depth for allowing the groove to facilitate collection of urine by the bottom sheet. In particular embodiments, the grooves are dimensioned to route urine into a central collection area defined by the bottom sheet from which the urine is then removed by a suction source.

Examples relate to devices, systems, and methods for fluid collection such as urine. The urine collection device includes a fluid impermeable barrier and a fluid permeable body. The fluid impermeable barrier at least partially defines a chamber. The fluid impermeable barrier includes at least one elongated portion having a first width and distal to the aperture and a second portion having a second width greater than the first width. The second portion at least partially defines an opening in the fluid impermeable barrier, and the opening has a maximum lateral dimension greater than the first width of the elongated portion. The fluid permeable body is configured to wick fluid away from the opening into the at least one elongated portion.