LDAS datasets are available from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC)
The Hydrology DISC portal enables both ftp and Mirador access to download datasets:
These datasets are also available via Giovanni. Giovanni is an online application developed by the GES DISC that allows researchers to rapidly explore data, so that spatial-temporal variability, anomalous conditions, and patterns of interest can be directly and easily analyzed online before optionally downloading the data. Supported download formats include NetCDF, HDF, ASCII, and KMZ.