Nixtun-Ch'ich', on the western edge of Lake Peten Itza in Peten, northern Guatemala, features an axis urbis and an urban grid dating to the Middle Preclassic period (800–500 b.c.). New research reveals that Middle Preclassic constructions—five circular or oval artificial pools and planned surface drainage—facilitated or impeded the movement of water. Large limestone rubble lines at least two of the pools (aguadas) in the city's core; two pools lie on the axis urbis, demonstrating that they were central ceremonial constructions. The gridded streets facilitated drainage: they consistently slope from west to east and from the center to north and south. In some areas seeing intense water flow, the streets divide into waterways and pedestrian-ways and/or were given special paving. Many scholars argue that water management contributed to the power of despotic kings, but no evidence of such rulers exists among the Middle Preclassic Maya. Nonetheless, we believe that such systems emerged in the Middle Preclassic. Nixtun-Ch'ich' appears to have been cooperative in its organization and its water management system was a public good.