Glossary

Terms used in Orenna’s project workspaces, calculations, and evidence records.

Project workspace

Area of Interest (AOI)
The mapped boundary used for project analysis.

Site Characterization
The collection and interpretation of available site data, with findings, sources, and coverage limits.

Data Room
The project library for documents, photos, source snapshots, and generated outputs.

Assets
Organization material that can be reused across projects, such as qualifications, templates, and writing examples.

Project memory
Confirmed facts, assumptions, and preferences Chat can reuse across conversations.

Decision log
Recorded choices, reasoning, alternatives, and supporting evidence.

Design add-on
Optional access to Modeling, Design, and Visualization. Cloud execution depends on configuration.

Outcomes and economics

Baseline
The reference condition used to assess a change or compare alternatives.

Outcome
A defined ecological result with quantities, timing, and supporting assumptions.

Attainment
An assumption about achieving an outcome, used to adjust modeled benefits.

Ramp
The modeled pattern and time it takes an outcome to reach full uplift.

Scenario
A set of cost, timing, and stewardship assumptions used to calculate project value.

Net present value (NPV)
Modeled funding receipts minus costs, discounted to present value.

Internal rate of return (IRR)
A discount rate at which modeled net cashflows have zero present value. Some cashflows do not yield a supported solution.

Payback
The point in the modeled timeline when cumulative cashflow recovers costs.

Monte Carlo
Repeated calculations using sampled inputs to explore modeled uncertainty.

Total Economic Value (TEV)
Literature-based public-good values shown separately by valuation method. Orenna does not add them to funding NPV.

Stacking
Combining funding claims. Model rules can restrict combinations; program requirements still need review.

Double-counting
Counting the same benefit more than once in a valuation or funding claim.

Evidence and review

Source snapshot
A retained copy of source data or a response used in an analysis, where source policy permits.

Citation
A reference connecting a statement to supporting evidence. Review the source to check whether it supports the claim.

Cryptographic hash
A digital fingerprint calculated from content. A change to the content changes its hash.

Signed manifest
A signed record identifying a file or finalized content and its sources. It helps detect changes without certifying conclusions.

Finalization
Locking an issued report or checklist state and creating a signed manifest.

Field Review
Review of synced field observations before adding them to the project record. Approval does not independently verify accuracy.

Audit trail
Recorded events that help reviewers follow changes, actions, and issued artifacts.

Restoration and ecology

Watershed
An area that drains to a common outlet.

Ecosystem services
Benefits people receive from ecosystems, such as water filtration, flood storage, habitat, and recreation.

Riparian restoration
Restoration of vegetation, channels, and floodplains along waterways.

Wetland restoration
Work to recover the functions of a degraded or lost wetland.

Nature-based solutions
Approaches that use natural processes to address environmental and community needs.

Volumetric Water Benefit Accounting (VWBA)
Methods for estimating volumetric water benefits. Review the selected method, units, and required inputs when defining a water outcome.

Habitat Suitability Index (HSI)
A measure of how well habitat conditions meet the needs of a specified species or life stage.