Abstract: Apparatus for portable rainwater harvesting system which consists of a closed container of indeterminate size with removably sealable openings which allow for entrapment and containment of precipitation, and/or an intermediate system which may or may not connect to a catchment system. The container may have an opening near the top as an entry point for the collected rainwater and an opening with valve assembly at or near the bottom for controllably dispensing the collected rainwater. Alternately, the container may have individual openings allowing for attachment of individual collectors without intermediate device. The container may also have openings for attachment of additional containers intended to increase the overall storage capacity of the system. The intermediate device may be articulating in nature to allow the system to be used in a plurality of orientations and the catchment mechanism may be of variable size and geometry facilitating ease of attachment and ease of storage when not in use.