Principle 01
Source visibility
Every output should make it clear which data are official, which are derived and which are contextual support layers.
Data & methodology
Clear criteria, visible limits and usable service levels
TerraNava’s methodological position is simple: public-facing technical work must make sources, service levels, uncertainty and limits explicit. That is the only way to keep outputs useful and defensible.
Methodological note
Not a black box
Outputs should always be read as structured interpretations, not as unquestionable truth. Technical judgment, field validation and institutional context still matter.
Working rules
Three principles guide every public-facing output
The same rules apply whether TerraNava is working on a narrative diagnosis, a public-facing map, a technical briefing or a support tool.
Principle 02
Service level clarity
Users must understand what a result can support: quick screening, technical comparison, territorial diagnosis or institutional communication.
Principle 03
Explicit limits
TerraNava does not present indicative outputs as if they replaced fieldwork, legal cartography or calibrated modelling.
Service levels
Outputs are organised by how far they can support a decision
Service levels help separate exploratory reading from stronger technical outputs. That prevents overclaiming and keeps HydroRisk and related work institutionally credible.
L1–L2
Orientation and screening
Useful for first-pass territorial reading, prioritisation and public explanation. Not equivalent to formal design work.
L3–L4
Structured technical comparison
Useful for more consistent comparison, technical framing and institutional dialogue when the data basis is strong enough.
L5+
Context-specific technical support
Reserved for outputs that require more direct interpretation, validation, custom framing or stronger data conditions.
Reference sources
A compact public source base
The public-facing stack combines official hydrological, climatic and cartographic references with documented support layers. The point is not to list everything, but to make the logic legible.
Official references
WMO, IPCC, MITECO, SNCZI, AEMET
Used when TerraNava needs public and technically defensible reference frames for water, climate and territorial risk.
Hydrological base layers
HydroSHEDS and structured basin layers
Useful for multiscale basin reading, drainage structure and comparable territorial interpretation.
Open support layers
OpenStreetMap and administrative geometry
Used for map context, visual support and territorial continuity when an official geometry is not the core analytical layer.
Transparency and traceability
Technical accountability
Transparency on data, methods and publication
TerraNava distinguishes information from official sources, calculated results, demonstrative materials and components that remain pending.
Public classification
How to read the information
Official status always belongs to the original source. TerraNava calculations and selections are identified as derived.
Institutional source
Information published by the responsible authority, retaining version, coverage and attribution.
Calculated result
An indicator, intersection, synthesis or visual produced from identified sources and documented rules.
Application example
Material showing a capability or method; it is not an official diagnosis or a commissioned result.
Not used for conclusions
A source, datum or validation not yet integrated. A missing value is never automatically treated as zero.
01 · Data and method
Reconstruct a reading
Documentation for identifying origin, transformation, scope and limitations.
02 · Status and changes
Know what is operational
Status and version records prevent unfinished work from being presented as complete.
03 · Responsible use
Public safeguards
Rules on technical integrity, privacy and access.
Corrections
Report an error or a better source
Identify the page, datum or version, explain the issue and provide a verifiable reference where available. TerraNava records the review and publishes a correction when it affects a public output.
Submit a correction