Stormwater infrastructure for water stewardship

Infrastructure SWCs VWBA & TNFD Pilot

Green infrastructure stewardship Audit-ready MRV and evidence Place-based, non-offset claims

Water infrastructure that makes green stormwater outcomes measurable, verifiable, and fundable

Shoalwater is the infrastructure layer that connects corporate water stewardship to local green stormwater infrastructure (GSI) performance. We custody evidence, run integrity-first MRV, and issue standardized Storm Water Credits (SWCs) tied to watershed outcomes—so investment supports real maintenance, real performance, and durable habitat benefits.

Start a pilot See framework alignment

Focus

Local performance

Watersheds, habitats, communities

Infrastructure

Custody → MRV → Issuance

Conservative, audit-ready by design

Legitimacy

VWBA & nature disclosures

Clear boundaries, durable records

The challenge

Green infrastructure is growing—maintenance and proof are not

Cities and communities have deployed green stormwater infrastructure at unprecedented pace. But long-term performance often degrades without routine inspections, maintenance funding, and early intervention. At the same time, corporate water stewardship needs credible, place-based outcomes that can withstand ESG scrutiny.

Performance fades without stewardship

GSI assets can lose capacity and function without ongoing O&M. When stewardship lapses, outcomes decline and habitat benefits erode—often invisibly until failure is costly.

Outcomes are hard to prove at scale

Without consistent evidence, MRV, and aggregation, local projects remain “unfundable” by corporate programs and difficult to incorporate into credible, contribution-based reporting.

Our solution

A shared infrastructure layer for GSI performance and watershed outcomes

Shoalwater provides the persistent backbone that cities, corporates, funders, and project owners can rely on over time: data custody, MRV, standardized issuance, and ongoing accountability—so green infrastructure stays functional and outcomes stay credible.

Persistent data custody

Standardized evidence vault and provenance so outcomes remain traceable years later—independent of project owners, vendors, or reporting cycles.

MRV (measure, report, verify)

Integrity-first MRV using conservative methods and human review—structured for VWBA-aligned accounting and disclosure-ready documentation.

Long-term accountability

Monitoring and maintenance linkage so credits reflect durable performance—not one-time installation claims.

Storm Water Credits

Standardized, audit-ready units for place-based stormwater outcomes

1 SWC = 1,000 gal

One thousand gallons of verified stormwater retained, infiltrated, or beneficially managed within a defined reporting period and watershed.

1,000 gal ≈ 3.785 m³

Use and boundaries

Contribution-based reporting only. Not an offset. Not a compliance instrument. Issued after MRV approval with evidence retained for audit.

Framework alignment

Built for VWBA, TNFD, and modern ESG scrutiny

Shoalwater is designed for place-based accounting, conservative claims, and reviewable documentation. SWCs map cleanly into VWBA-style volumetric water benefit accounting and support nature-related disclosures where transparency, location, and evidence matter.

Pilot

Green infrastructure stewardship pilot (urban watershed)

Validate measurement, maintenance uplift, and contribution-based reporting across existing and new GSI assets—linking corporate investment to verified watershed outcomes and sustained performance over time.

Corporate partnerships

Start a place-based GSI stewardship pilot

Select a priority watershed, confirm local implementation partners, define MRV and reporting scope, and set integrity-first communications guardrails—so investment supports durable performance and credible disclosures.

Email cesar@shoalwater.earth Back to top

Contribution-based programs. No regulatory compliance credits. No offsets. Shoalwater guarantees process integrity and audit-ready records—not project performance.