Source
https://www.legislation.govt.nz/regulation/public/2020/0174/latest/whole.pdf — original source (opens in a new tab; the file is not redistributed)
NES-Freshwater (LI 2020/174) — the natural-wetland gate and fish passage
🔴 A wetland within 100 m is close to a build-EXCLUSION, not a cost
CR_046 recorded “within 100 m of a natural wetland → NES-FW consent + fish passage” as one line. The regulation is a graduated escalation topping out at non-complying (reg 52) — the second-hardest RMA activity class — for earthworks or a water take that would drain the wetland. And the softer discretionary doors mostly require the activity to be “for the purpose of constructing specified infrastructure” — which a community’s dwellings are not. So a Neobiome build near a natural wetland does not even get the discretionary pathway a lines company would.
Summary
LI 2020/174, as at 15 January 2026 (81 pp). The freshwater NES made under the RMA. Two subparts bear on a Neobiome site: Subpart 1 — natural inland wetlands (setback-based activity classes), and Subpart 3 — passage of fish affected by structures (culverts, weirs, dams, fords).
Key claims
- claim: "NATURAL-WETLAND ESCALATION LADDER (setback = horizontal distance from the wetland boundary): reg 45(1)-(2) - vegetation clearance / earthworks WITHIN a 10 m setback = DISCRETIONARY, if for constructing specified infrastructure. reg 45(3) - earthworks in the 10-100 m band = DISCRETIONARY if for specified infrastructure AND likely to drain the wetland. reg 45(4) - taking/use/damming/diversion of water within a 100 m setback with a hydrological connection to the wetland = DISCRETIONARY if for specified infrastructure. reg 52(1)-(2) - earthworks OR water take/use/dam/divert 'outside, but within a 100 m setback from, a natural inland wetland is a NON-COMPLYING ACTIVITY if it- (a) results, or is likely to result, in the complete or partial drainage of all or part of a natural inland wetland; and (b) does not have another status under any of regulations 38 to 51.'"
source_location: "regs 45(1)-(4), 52(1)-(2)"
- claim: "'setback... means the distance measured horizontally from the boundary of the natural inland wetland that creates a buffer within which the activity CANNOT TAKE PLACE except in accordance with these regulations.' 'natural inland wetland has the meaning given by the National Policy Statement for Freshwater Management.' The softer discretionary pathways (reg 45) are gated on the activity being 'for the purpose of constructing specified infrastructure' - a NPS-FM defined term (network utilities, roads, etc.); a community's DWELLINGS are not specified infrastructure."
source_location: "reg 3(1) definitions ('setback', 'natural inland wetland', 'specified infrastructure')"
- claim: "FISH PASSAGE - Subpart 3 applies to structures affecting fish passage: '(a) a culvert: (b) a weir: (d) a dam: (e) a ford.' A CULVERT is how a rural site crosses a stream for a driveway or internal road. reg 70 makes a culvert a PERMITTED activity only if it meets fish-passage design conditions: 'the culvert must provide for the same passage of fish upstream and downstream' and 'must be laid parallel to the slope of the bed of the river'. So any stream crossing on a site is regulated - it is permitted only if built to pass fish."
source_location: "Subpart 3 scope (culvert/weir/dam/ford); reg 70 permitted-activity conditions"
- claim: "LENIENCY DIRECTION (mirrors the NES-DMRU pattern): 'A district rule, regional rule, or resource consent may be MORE LENIENT than any of regulations 70 to 74 (culverts, weirs, and passive flap gates) if the rule is made, or the resource consent is granted, for the purpose of PREVENTING the passage of fish in order to protect particular fish species' (e.g. to keep invasive fish out). So the fish-passage default can be varied locally, but only to protect fish, not to ease construction."
source_location: "fish-passage leniency provision (rr 70-74)"Neobiome Intelligence relevance
The wetland gate is a feasibility gate, not a cost line
The activity class escalates with what the work does to the wetland:
| Activity near a natural inland wetland | Status |
|---|---|
| Vegetation clearance / earthworks within 10 m (for specified infrastructure) | Discretionary (reg 45(1)–(2)) |
| Water take/dam/divert within 100 m with a hydrological connection | Discretionary (reg 45(4)) |
| Earthworks in the 10–100 m band likely to drain the wetland | Discretionary (reg 45(3)) |
| 🔴 Earthworks / water take in the 100 m band that drains the wetland, no other status | NON-COMPLYING (reg 52) |
“Non-complying” is the second-hardest RMA activity class (only “prohibited” is harder): a consent must pass the s104D gateway and is frequently refused. A drainable natural wetland within 100 m of the buildable area is close to a build-exclusion, not a consenting cost.
Two things make it worse for Neobiome specifically:
- The discretionary (softer) pathways mostly require the activity to be “for the purpose of constructing specified infrastructure” — an NPS-FM defined class (network utilities, roads). A community’s dwellings are not specified infrastructure, so a Neobiome build near a wetland doesn’t get the pathway a network utility would.
- It compounds with NPS-HPL (REG_009): the two national instruments that most constrain a Neobiome site are both freshwater/land protections, and both bite the rural parcels the model favours.
🔴 Fish passage — every stream crossing on the site is regulated
Subpart 3 covers culverts, weirs, dams and fords — and a culvert is exactly how a rural community crosses a stream for a driveway or internal road. reg 70 permits a culvert only if it meets fish-passage design conditions (“the same passage of fish upstream and downstream”, laid parallel to the bed). So any waterway crossing on a rural parcel is a regulated activity — the normal situation for a rural site, not an edge case. It is a design condition (and cost) on internal roading, not a bar.
Closes three loops
- RT_333 (run-of-river low flow) lives in this same freshwater regime: micro-hydro’s diversion (RMA s14), its intake structure (RMA s13), and any access-track stream crossing (this NES) are now all shown to be freshwater-regulated. The freshwater consent load on a stream-dependent design is heavy and multi-headed.
- Validates the GIS design: the sampler already carries a rivers layer and distance-to-river; a wetland-proximity overlay is its missing companion, and it is a hard feasibility gate.
Research targets
Research gaps
- RT_353 (med) — A national wetlands GIS layer (MfE freshwater / LRIS mapped natural inland wetlands) for the sampler. The GIS pipeline carries no wetlands layer as at 2026-07-15, so a wetland-proximity flag needs this layer sourced first. | REG_018 | MfE / LRIS wetland datasets
(No new consenting RTs — the wetland and fish-passage rules are settled by the regulation itself.)
Notes
Primary secondary-legislation, as at 15 January 2026, read verbatim via pdftotext -layout — data_quality: verified. Retrieved from legislation.govt.nz.
⚠ natural inland wetland is defined by the NPS-FM, not here — and its scope (what counts as a wetland, exclusions for pasture/artificial wetlands) has been contentious and amended repeatedly. The activity classes above are firm; the definition boundary of what triggers them should be confirmed against the current NPS-FM before the deliverable relies on edge cases.
Connections
Links to
Sources (1): REG_009
Referenced by
Sources (1): REG_038
EDT domains (1): D03: Water, Waste & Circular Systems
Concepts (1): Regulatory Consenting for Off-Grid Communities…