OneAquaHealth Project, published by OneAquaHealth Project. This guide is not an authorized publication; it is the continuous build for version 0.1.0-ci-build built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-eu/oah/ and changes regularly. See the Directory of published versions

Logical Models

This page summarizes the logical models defined in input/fsh/model-maps. Each entry lists the intent of the model and the main data elements captured for interoperability across the Implementation Guide.

DataSet (OAH Data Set Model)

DataSet logical model

Captures the metadata for a OneAquaHealth data set, including stewardship and access details.

• Identifiers and naming: globally unique persistent identifier (pid), title, description, version, type.
• Stewardship: contact, publisher, author, date, dateOfApproval, dateOfReview, plus licence and copyright.
• Size and composition: overall size, numberOfRecords, and repeating record entries with title, format, link, and size.

IndicatorsOah (OAH Indicators)

IndicatorsOah logical model

Organizes the collections of indicators used across the project, grouped by theme.

• Biological quality: macroinvertebrates, diatoms, fish, macrophytes, riparian vegetation, and microbiomes.
• Hydromorphological quality: morphology, hydrology, and land use aspects that influence habitat and connectivity.
• Water quality: nutrients, pH, dissolved oxygen, temperature, dissolved/suspended solids, conductivity, pharmaceuticals, foam/colour/smell, and coliforms.
• Biological indicators of health risks: diptera, ticks, invasive organisms, birds, diatom teratology, fish, and amphibians.
• Remote sensing indices: chlorophyll and vegetation/water indices for aquatic/riparian assessment (e.g., NDCI, MCI, NDVI/mNDVI, NDWI/MNDWI/ANDWI, SAVI/TSAVI), moisture/temperature measures (LWCI, GVMI, LST), and urban/built-up indices (BLFEI, BRBA, NBAI, IBI, EBBI, PISI, UI, VIBI).

Sample (SampleOah)

Sample logical model

Describes the sampling site and event supporting an indicator.

• Site context: one or more identifier and name values, optional gps, free-text characteristics, and formReference to supporting documentation.
• Sampling event: mandatory dateOfSampling and optional performer (organization or practitioner role) information.

SimpleIndicator (SimpleIndicatorOah)

SimpleIndicator logical model

Represents an indicator with a single value.

• Links to the associated sampleDetails.
• Captures type of measurement, one or more date values, performer, and a single result (codeable concept or quantity).

StructuredIndicator (StructuredIndicatorOah)

StructuredIndicator logical model

Represents an indicator composed of multiple components.

• Links to the associated sampleDetails.
• Captures type of measurement, one or more date values, and performer.
• Includes repeating component entries, each with its own type and result (codeable concept, quantity, or string).