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The purpose of this document is to describe the data integration architecture for the New Mexico Water Data Initiative (NNWDI). It describes in a “bottom-up” approach the NMWDI. It proceeds as follows
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The goal of the New Mexico Water Data Initiative is to make available to the public data collected by multiple agencies about water resources in New Mexico in a common format. Many (but not all) agency data are already published online through services such as ESRI web maps, excel files, or in some cases public APIs. However, important aspects for a given data type (such as water table level measurements from wells) such as data/time formats, geospatial projections, column names, and units vary from agency to agency and even from dataset to dataset within agencies. In order to allow users to access data from multiuple agencies in one format, the NMWDI architecture will route all agency data through one Web API standard with one corresponding underlying data model that references one common statewide water data controlled vocabulary. As long as each agency somehow serves their data through the common Web API, data storage can be federated (i.e. not centralized), although some degree of centralization can be accomodated if that is the most convenient. Each agency’s standardized API will be published through a central portal with an NMWDI administered API Management Platform. Users can send API requests to the management platform, which will route these requests to the agency APIs and in turn forward the responses to users. However, whether data storage is federated across agencies or centralized, all contributing agency data will be required to be mapped to the common data model and transformed into the common format before being delivered to users. This basic data flow is illustrated in Figure 1.
Figure 1. Basic data flow.
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