Paper presented at The Seventh International Conference on HydroScience and Engineering (ICHE) hosted by the College of Engineering at Drexel Univeristy on September 10-13, 2006 in Philadelphia, Pennsylvania. The conference theme was IT in the Field of HydroSciences. It included several mini-symposia that emphasized IT topics in HydroSciences and the yearly meeting of the metadata group of the International Oceanographic Data and Information Exchange organization. There is growing recognition that a synergistic integration of data, knowledge, and methods from a variety of water-allied disciplines is needed to study, engineer for, or manage water resources. This integrated approach is necessary if we are to consider all components of the water cycle and their complex interactions with ecological, biogeochemical and human systems at a watershed-scale. The paper describes the initial stage of the development of a pilot cyberinfrastructure-based eco-hydrological observatory obtained by integrating in situ eco-hydrological measurements and geographically referenced data collected by third parties with modeling and analysis tools within a common digital platform. The long-term objective of the observatory is to enable collaborative scientific investigations and support the decision-making process for the watershed stakeholders.