This data package contains raw neutron count data for monthly soil water probe measurements made at 15 net primary production (NPP) study locations on Jornada Experimental Range (JER) and Chihuahuan Desert Rangeland Research Center (CDRRC) lands. Once a month, soil water content measurements are made at 10 depths (where possible) at each of 10 access tubes at each of the 15 NPP sites using a neutron probe (Campbell Model 503DR Hydroprobe). This dataset consists of the count of thermalized neutrons at 30 cm depth intervals to a maximum depth of 300 cm. These counts are subsequently converted to volumetric water content as provided in EDI packageID knb-lter-jrn.210013002. The sites represent the 5 dominant vegetation types in the Jornada Basin with 3 sites of each type representing the range of low, medium, and high biomass for the dominant vgetation type at that site. These vegetation habitats consist of 3 shrub (creosotebush, mesquite dune, and tarbush) and 2 grass (upland grassland and playa). This data collection is ongoing with new data collected monthly.