DC Water Environmental Bond
Aligned SDGs
- DC Water Environmental Bond
- General overview
- Location
- Involved organisations
- Outcome metrics
- Other resources
- Spreadsheet of data
- DC Water Environmental Bond
- General overview
- Location
- Involved organisations
- Outcome metrics
- Other resources
- Spreadsheet of data
General overview
Stage of development: Implementation
Policy sector: Agriculture and environment
Date outcomes contract signed: 2017
Start date of service provision: Oct 2016
Capital raised (minimum): USD 25m
Max potential outcome payment: USD 28.30m
Intervention
Development of green infrastructure (i.e. permeable pavement and bioretention) designed to mimic the same absorption and filtering processes found in nature in order to slow surges of stormwater during periods of heavy rainfall. Beneath the surface of a rain garden or permeable pavement installation, there are layers of soil, rock, and gravel that slowly filter stormwater allowing it to be reabsorbed into the ground or flow into the sewer system and back to the treatment facility for treatment. By absorbing and slowing stormwater, green infrastructure mitigates stormwater runoff, ultimately reducing the incidence and volume of CSOs (i.e. Combined Sewer Overflow).
Target population
20 equivalent impervious acres of green stormwater infrastructure for Rock Creek Project A.
Location
Country
- United States
Service delivery locations
- Rock Creek sewershed, Washington, DC, USA
Involved organisations
Outcome metrics
- Reduction in stormwater runoff - better than expected performance. Percentage reduction in stormwater runoff per acre by >41.3%. Evaluator performance monitoring results.
- Reduction in stormwater runoff - performance within predicted bounds. Percentage reduction in stormwater runoff per acre between 18.6%<= and <=41.3%. Evaluator performance monitoring results.
- Reduction in stormwater runoff - worse than expected performance. Percentage reduction in stormwater runoff per acre between <18.6%. Evaluator performance monitoring results.
Other resources
Spreadsheet of data
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