Input data set: GRanD reservoirs & dams

The dam data is based on GRanDv1.1 (Lehner et al., 2011, DOI: 10.1890/100125), but adjusted to match the river-routing in DDM30.

Use of these data sets is recommended but, if unfeasible, groups may use their default dataset. For a comparison of the GranD/ISIMIP dataset with the default WaterGAP and LPJmL datasets, see

Data Type: Other
Simulation rounds: ISIMIP2b, ISIMIP2a, Fast Track
Scenarios: histsoc

A few of the dams have no information regarding the construction year, and in the varsoc simulations they are assumed to exist during the whole simulation period.

Download Instructions

For ISIMIP participants, these files are available for download on the DKRZ server vre2 using the path /ISIMIP/ISIMIP2b/InputData/landuse_humaninfluences/reservoirs_dams.

For external users, these data will shortly be made available on the ISIMIP node of the ESGF server ( Currently they are available via an rsync facility (described here:, for which the password will be provided upon request (