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Open Portfolio
Wetland restorationPlanned

Sand Dune Aquifer Recharge Basins

Construction of 14 infiltration basins in the Doñana dune system to capture winter rainfall and channel it into the critically over-exploited Almonte-Marismas aquifer, supplementing base flows to the Marismas.

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Marismas del Guadalquivir · HydroBASINS L8: 2080029210
May 2025 – ongoing
Parque Nacional de Doñana / Ministerio para la Transición Ecológica / Instituto Geológico y Minero de España (IGME)
145 ha · € 7.2M
Sub-basin location
HydroBASINS Level 8 polygon

Sub-basin boundary: HydroBASINS Level 8 (HYBAS_ID 2080029210) · Polygon is approximate at this zoom

Basin Health Impact
Before vs. projected after project contribution
Water Quantity+10 pts
Before
29Low
After
39Low
Water Quality+3 pts
Before
44Low
After
47Low
Riparian HabitatNo signal
Before
42Low
Composite BHS contribution+5 pts

Weighted: Quantity × 0.45 + Quality × 0.20 + Habitat × 0.35

Ground Validation
IoT sensors · Galileo/EGNOS certified
Almonte–Marismas Groundwater Sensor
Groundwater Depth
Galileo ±0.4m
Sentinel-1 InSAR subsidence
Satellite: 5.1 m bglIn-situ: 4.8 m bgl
91% agreement
Guadalquivir Estuary Turbidity Probe
Turbidity
Galileo ±0.5m
Sentinel-3 OLCI turbidity
Satellite: 33.2 NTUIn-situ: 31.4 NTU
95% agreement

In-situ readings from Galileo/EGNOS-certified IoT devices validate satellite-derived indices. High agreement confirms satellite-based BHS scoring for CSRD E3-4 discharge evidence.

Delivery metrics

Budget
€ 7.2M
Area
145 ha
Timeline
May 2025 – ongoing
Status
Planned
Delivered
Target: 14 infiltration basins; est. 4.1 hm³ /yr aquifer recharge
Compliance exports
Two primary live clicks: project + compliance JSON
  • CSRD
    ESRS E3-4Water consumption, basin stress and restoration contribution evidence
  • CSDDD
    Article 8Adverse-impact mitigation programme linked to basin outcomes
  • SBTN
    Step 3 — QuantityFreshwater target-setting inputs at sub-basin level
  • TNFD
    LEAP — LocateNature-risk evidence for geolocated restoration activity
Using live score context
Using live basin score
Audit trail
Replay the evidence lineage for this stewardship project
  1. Project geography
    HydroBASINS Level-8 anchor and project centroid used for repeatable basin-level evidence generation.
    hybas=2080029210
center=-6.50000, 36.95000
  2. Evalscript versions
    Pinned, content-addressed evalscripts. Replayable byte-for-byte.
    sentinel2-bhs-combined-v1@static-snapshot
outputs=ndwi,mndwi,ndvi,ndmi,turbidity,chla,bare
  3. Source scenes
    Recent STAC scene IDs attached to the basin score run for audit replay.
    No STAC scene IDs attached
  4. Scoring function
    Basin sub-indices weighted via bhs-v0.5.0.
    quantity*0.45 + habitat*0.35 + quality*0.2
  5. Computation provenance
    Run signature stored with the exported project evidence pack.
    run=static-snapshot · at=2026-04-28T19:58:03.565Z

Partners

Operator
Parque Nacional de Doñana / Ministerio para la Transición Ecológica
Partner
Instituto Geológico y Minero de España (IGME)

Basin context

Doñana / Huelva Basin
BHS 38 · 2 projects · 0.5M people
View all projects in Doñana / Huelva Basin →