Applying a nested watershed framework to concentration-discharge (cQ) relationships offers valuable insights into the spatial and temporal variability of solute transport. We examined nitrate-N cQ relationships at two nested spatial scales in a small agricultural watershed using three years of 30-minute data, analyzing both composite records and individual storm events. Metrics including the flushing index (FI), hysteresis index (HI), cQ slope (b) and the ratio of coefficients of variation for concentration and discharge (CVC/CVQ) were used to compare event-scale and composite cQ patterns, evaluate the influence of metric choice, assess spatial consistency during 97 concurrent storm events, and identify controls on inter-event variability. Composite-scale analyses showed nitrate-N enrichment, while event-scale patterns were dominated by dilution or chemostasis, depending on the metric used. Across scales, nitrate-N enrichment on the falling limb, or post-storm enrichment, emphasized the need for an additional metric to characterize falling limb dynamics. Spatial consistency in cQ behavior varied by metric: CVC/CVQ and FI showed higher consistency during concurrent storms, while cQ slope and HI often revealed contrasting patterns. Controls on event-scale cQ patterns varied across spatial scales. Indicators of seasonality, antecedent moisture, and storm event magnitude influenced the FI and cQ slope only at the subcatchment, while the HI was primarily driven by storm magnitude across scales. These findings highlight the importance of scale, both temporal and spatial, and metric choice in interpreting nitrate-N export dynamics.