Geospatial data and model archives associated with precipitation-driven flood-inundation mapping of the East Fork Little Blue River and associated tributaries at Lee's Summit, Missouri

The U.S. Geological Survey (USGS), in cooperation with the City of Lee's Summit, Missouri, assessed flooding of the East Fork Little Blue River and associated tributaries resulting from varying precipitation magnitudes and durations, antecedent soil moisture conditions, and channel conditions. The precipitation scenarios were used to develop a library of flood-inundation maps, depth rasters, water-surface elevation rasters, and point-velocity values that included a 2.95-mile reach of the East Fork Little Blue River and tributaries within the City of Lee's Summit. A U.S. Army Corps of Engineers Hydrologic Engineering Center-River Analysis System (HEC-RAS; version 6.5) 2D "Rain-on-Grid" model was used to assess the streamflow magnitudes associated with simulated precipitation amounts and the resulting flood-inundation conditions, depths, water-surface elevations, and point velocity values. The model was calibrated to the April 28, 2024, May 2, 2024, and July 1, 2024, runoff events representing a range of antecedent moisture conditions and basin responses. The model was then used to simulate rainfall events based on design rainfalls from 15-minute to 24-hour durations and ranging from a 100- to 0.1-percent annual exceedance probability. Flood-inundation maps were produced for water-surface elevations from 884-feet at a reference point (near bankfull) to 897-feet at the reference point, or a water-surface elevation approximating the 0.1-percent annual exceedance probability precipitation with wet antecedent conditions. The consequence of each precipitation duration frequency value was represented by a 1-foot increment inundation map based on the generated water-surface elevation at the East Fork Little Blue River reference location. Fourteen flood-inundation maps and accompanying depth rasters, water-surface elevation rasters, and point velocity values were created. This data release includes: (1) Depth_Rasters.zip file containing fourteen raster dataset files, Depth_X.tif where X = 884 - 897 corresponding to fourteen 1-foot increment flood-inundation maps; (2) WSEL_Rasters.zip file containing fourteen water-surface elevation rasters, WSEL_X.tif where X = 884 - 897, of the water-surface elevations at the East Fork Little Blue River reference location water-surface elevations of 884-feet ot 897-feet, corresponding to fourteen 1-foot increment flood-inundation maps; (3) Velocity_locations_at_hydraulic_structures.zip file containing a shapefile dataset of the locations of the hydraulic structures found in the East Fork Little Blue River and associated tributaries; (4) EFLB_summary_tables.zip file containing tables summarizing the model results including the flood-inundation map condition of each model scenario for dry (CNI; EFLB_summary_table_1_1.csv), normal (CNII; EFLB_summary_table_1_2.csv), and wet (CNIII; EFLB_summary_table_1_3.csv) antecedent soil moisture conditions; (5) EFLB_model_performance_calibration_metrics.zip file containing the tables of model performance and calibration metrics, locations of continuous pressure transducers (EFLB_PT_locations.zip) and the discharge measurement location (RF1; ELFB_discharge_measurement_location.zip) used in assessment of model calibration and validation and time series of the pressure transducer data (EFLB_PT_time_series.zip); (6) Velocities_at_hydraulic_structures.csv file containing the velocities at the hydraulic structures for the discharge measurement location water-surface elevations of 884-feet to 897-feet; (7) EFLB_inundation_extents.zip file containing the shapefile (polyLS_Project_2025.shp) dataset of the streamflow inundation extents at the East Fork Little Blue River reference location water-surface elevations of 884-feet to 897-feet; (8) LS_studybounds.zip file containing boundsLeesSummit.shp, a polyline shapefile indicating the study area boundaries; (9) EFLB_Dry.zip file containing 2D "Rain-on-Grid" model run files used in the simulation of dry hydrologic response conditions (CNI conditions); (10) EFLB_Wet.zip file containing 2D "Rain-on-Grid" model run files used in the simulation of wet hydrologic response conditions (CNIII conditions); (11) EFLB_Normal.zip file containing 2D "Rain-on-Grid" model run files used in the simulation of normal hydrologic response conditions (CNII conditions); (12) EFLB_Climate_and_Calibration.zip file containing 2D "Rain-on-Grid" model run files used in the simulation of climate scenarios and calibration scenarios. Associated Scientific Investigations Report: -------------------------------------- Atkinson, A. A., Precipitation-Based Flood-Inundation Maps for the East Fork Little Blue River and Tributaries at Lee’s Summit, Missouri: U.S. Geological Survey Scientific Investigations Report 2026-XXXX, x p., https://doi.org/10.3133/sir2026-XXXX.

                                            [
  "010:12"
]
                                        

                                            {
  "fn": "Allison A Atkinson",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:aatkinson@usgs.gov"
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                                            [
  "East Fork Little Blue River",
  "Lee's Summit",
  "Missouri",
  "USGS:682b8d4fd4be024992ebd778",
  "geospatial analysis",
  "hydraulic engineering",
  "modeling"
]
                                        

                                            {
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                                            [
  "geospatial"
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