Geocell-based drainage base system for sports fields consisting of geocells, geotextiles, gutters, outlets, channels, drains, tubing, troughs, collection boxes, HDPE liners, and aggregate; multi-layer geocell-based sports field system consisting of geocells, geotextiles, gutters, outlets, channels, drains, tubing, troughs, collection boxes, HDPE liners, and aggregate; multi-layer geocell drainage system consisting of geocells, geotextiles, gutters, outlets, channels, drains, tubing, troughs, ...