This tabular dataset represents monthly flow at 80 tributary pour points (see the RGTIHM_Tributary_Pour_Pts feature class) used as model boundary inflow locations to tributaries (see the RGTIHM_Tributaries feature class) simulated with the Streamflow-Routing (SFR) Package for MODFLOW-One-Water Hydrologic Flow Model in the Rio Grande Transboundary Integrated Hydrologic Model (RGTIHM). Flows in this dataset were derived from the Transboundary Rio Grande Watershed Model (TRGWM) estimates of recharge and runoff accumulated from TRGWM grid cells within the subwatershed (see the RGTIHM_TRGWM_Subwatersheds feature class) upstream of the pour point (Hanson and others, 2018). Flow in this tabular dataset is specified monthly at each inflow point as a rate (volume per time) in units of cubic feet per day. See the Inflow_ID attribute in the RGTIHM_Tributary_Pour_Pts and Inflw_ID attribute in the RGTIHM_Tributaries feature classes for the location of the pour points and the segment to which the flow was applied, respectively. TRGWM-derived flow was not simulated in the RGTIHM at 11 pour points that had no associated tributary (see the Sim_Inflow attribute in the RGTIHM_Tributary_Pour_Pts feature class), and TRGWM-derived flow for these 11 pour points is not included in this tabular dataset.