Restoring Wetlands on California Department of Water Resources-Owned Areas of Twitchell and Sherman Islands
Developer: California Department of Water Resources
#3of 18 in Blue carbon#217of 1661 in United States#138of 934 in American Carbon Registry (ACR)
Assessment
Scale 0–10 · method weights: integrity 35% · transparency 25% · claim safety 25% · documentation 15%.
Findings
Risk Indicators
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Score Breakdown
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Detailed Analysis
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Evidence
Eligibility & market
What can you claim with this credit?
Four checks buyers ask about, from the registry and the Integrity Council (ICVCM).
Airlines (CORSIA)
No CORSIA label on the registry
Not usable for airlines' CORSIA obligations.
Source: registry label
Integrity label (ICVCM CCP)
No ICVCM information
No CCP label and no ICVCM decision found for this project's methodology.
Removal or reduction
Carbon removal
Takes CO₂ out of the atmosphere — the only type that can neutralise residual emissions in an SBTi net-zero claim.
Source: project sector
Paris Agreement (Article 6)
No Article 6 authorization
No corresponding adjustment: the host country can also count this reduction towards its own target.
Source: registry label
Information only, from public sources. Claim rules (CORSIA, SBTi, EU rules on green claims) change: check them before making a public claim. Since 27 September 2026, EU consumer rules do not allow “climate neutral” product claims based on offsets.
Registry labels last checked:2026-09-27
Credit Vintages
| Issued | Retired | Available | ||
|---|---|---|---|---|
| 2011 | 170 | 150 | 20 | |
| 2012 | 683 | 601 | 82 | |
| 2014 | 5,316 | 0 | 5,316 | |
| 2015 | 13,713 | 0 | 13,713 | |
| 2016 | 12,171 | 0 | 12,171 | |
| 2017 | 11,233 | 0 | 11,233 | |
| 2018 | 16,266 | 0 | 16,266 | |
| Total | 59,552 | 751 | 58,801 |
Retired by
Organisations named as beneficiaries in the registry's public retirement records.
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Profile & governance
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