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Riparian bufferActive

Marismas Riparian Buffer Restoration

Re-establishment of native riparian buffer zones along the Guadalquivir estuary margins and seasonal streams feeding the Doñana Marismas, reducing agricultural runoff and improving wetland water quality.

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Guadalquivir Bajo · HydroBASINS L8: 2080028430
Feb 2024 – ongoing
Confederación Hidrográfica del Guadalquivir / Doñana Biological Station (CSIC) / WWF España
580 ha · € 3.4M
Sub-basin location
HydroBASINS Level 8 polygon

Sub-basin boundary: HydroBASINS Level 8 (HYBAS_ID 2080028430) · Polygon is approximate at this zoom

Basin Health Impact
Before vs. projected after project contribution
Water Quantity+8 pts
Before
29Low
After
37Low
Water Quality+4 pts
Before
44Low
After
48Low
Riparian Habitat+12 pts
Before
42Low
After
54Low
Composite BHS contribution+9 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
€ 3.4M
Area
580 ha
Timeline
Feb 2024 – ongoing
Status
Active
Delivered
0.18 / 0.58 hm³ /yr abstraction reduced; 210 ha buffer established
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=2080028430
center=-6.35000, 37.00000
  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
Confederación Hidrográfica del Guadalquivir
Partner
Doñana Biological Station (CSIC) / WWF España

Basin context

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