Pitamber Wagle
Brigham Young University
| Subject Areas: | Water resources engineering |
Recent Activity
ABSTRACT:
This workshop walks through a complete pipeline for building a relational flood inundation map (FIM) database that integrates outputs from multiple modeling sources and ties them to the National Water Model. The motivating problem is fragmentation: flood maps are produced by NOAA OWP, FEMA, USACE, USGS, InFRM, and FHWA in different formats and at different standards, with no common platform connecting them to operational NWM forecasts. The proposed solution is an 8-table SQLite schema storing extent polygons, depth and water-surface-elevation rasters, rating curves, and source metadata, with each flood map linked to NWM feature IDs so that a forecasted flow can be used to retrieve the matching map on demand. Participants work through a four-stage Python workflow split across three Jupyter notebooks. The first stage generates HAND-based FIMs using FIMServe: an area of interest and HUC8 are selected, hydrofabric is pulled from the CIROH S3 bucket, return-period flows are retrieved through the NWM API, and HUC-8 flood maps are merged and clipped as needed. The second stage harmonizes maps from different models by aligning projection, resolution, data type, no-data representation, and grid alignment, then dissolves and smooths vector extents and compresses rasters to reduce file size. Metadata files are then generated to populate the database tables. The third stage builds and populates the SQLite database with content from HAND, HEC-RAS, SRH-2D, AutoRoute, FIER, and satellite-derived sources, and uploads the result to HydroShare. The fourth stage uses the Tulane FIM visualization tool to display flood scenarios, compare maps across models, and overlay custom user files. The workshop closes with implications for research and operations and a look at planned extensions for velocity, impact, and ensemble/probabilistic visualization.
Acknowledgements:
This research was supported by the Cooperative Institute for Research to Operations in Hydrology (CIROH) with funding under award NA22NWS4320003 from the NOAA Cooperative Institute Program. The statements, findings, conclusions, and recommendations are those of the author(s) and do not necessarily reflect the opinions of NOAA.
ABSTRACT:
This is a test case for extracting and visualizing FIMs from nencarta for regions outside US. We recommend you to use this data for testing purpose only
ABSTRACT:
This is a test case for extracting and visualizing FIMs from nencarta for regions outside US. We recommend you to use this data for testing purpose only
ABSTRACT:
This is a test case for extracting and visualizing FIMs from nencarta for regions outside US. We recommend you to use this data for testing purpose only
ABSTRACT:
This is a DEVCON test case for extracting and visualizing FIMs from different sources. We recommend you to use this data for testing purpose only
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Created: Sept. 28, 2024, 6:15 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a compilation of test FIM maps made from a model we received from USACE (ERDC) of the North Platte River. Please don't use this data except for testing purposes.
Created: Sept. 28, 2024, 10:17 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is just a replication of model. It has not been finalized. Please don't use this data except for testing purposes.
Created: Jan. 9, 2025, 10:35 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is just a practice session
Created: Jan. 11, 2025, 7:58 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is just a demo session for testing
Created: Jan. 17, 2025, 9:27 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
Trying something new with the database
Created: Jan. 18, 2025, 1:14 a.m.
Authors: Wagle, Pitamber
ABSTRACT:
Trying something new with the database and OWPHAND flood map
Created: Jan. 21, 2025, 8:48 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
Trying something new with the database and OWPHAND flood map (error rectified)
Created: Jan. 24, 2025, 8:17 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is visualization of flood maps of Ohio river reach generated from FIMServe by feeding NWM return period forecast values
Created: Jan. 27, 2025, 11:45 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
Flood maps from OWP HAND model taking actual NWM return period values for reaches in multi hucs
Created: March 26, 2025, 4:59 a.m.
Authors: Wagle, Pitamber
ABSTRACT:
Taylor's AutoRoute test case for New Hampshire
ABSTRACT:
Taylor's AutoRoute test case for New Hampshire and Colorado (for different locations)
Created: March 31, 2025, 4:19 a.m.
Authors: Wagle, Pitamber
ABSTRACT:
Taylor's AutoRoute test case for New Hampshire compared with HAND and Reference map
Created: April 18, 2025, 7:02 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is test model for the updated version of FIM visualization. It includes HAND AND HEC-RAS model
Created: April 18, 2025, 8:59 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for dummy real time scenario for Chickasawhay River in West King
Created: April 18, 2025, 10:19 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for dummy real time scenario for MsTallahatchie River in Batesville
ABSTRACT:
This is a test model for dummy real time scenario for Alabama River in Alabama
Created: June 13, 2025, 10:58 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for dummy real time scenario for Alabama River in Alabama (with smoothened extent)
Created: June 16, 2025, 7:07 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for dummy real time scenario for Beaver River in Alabama
Created: June 27, 2025, 11:02 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for dummy real time scenario for a River reach with ID 2410418 in Texas
Created: June 30, 2025, 9:02 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for dummy real time scenario for North Fork River in Texas
Created: June 30, 2025, 10:15 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for dummy real time scenario for North Fork River in Texas (updated)
Created: July 1, 2025, 8:27 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for Choctawatchee river appending with the existing database
Created: July 22, 2025, 6:42 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for intergrating FIMServe and Benchmark FIM from SDML
Created: July 23, 2025, 12:17 a.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for intergrating InFRM flood maps library with FIM database
Created: Aug. 10, 2025, 8:54 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for integrating InFRM flood maps library with FIMserve Hand maps FIM database
Created: Aug. 10, 2025, 9:10 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for integrating InFRM flood maps library with FIMserve Hand maps FIM database
Created: Aug. 10, 2025, 10:23 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test model for integrating InFRM flood maps library with FIMserve Hand maps FIM database
Created: Sept. 6, 2025, 6:14 a.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test case to show how database concept can be used for NWM operation
Created: Sept. 10, 2025, 10:01 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test case for demonstrating the capabilities of database
Created: Sept. 17, 2025, 11:16 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test case for visualizing FEMA map
Created: Sept. 18, 2025, 7:04 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test case for extracting and visualizing USGS map
Created: Sept. 29, 2025, 11:20 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test case for extracting and visualizing NWM and Geoglows map
ABSTRACT:
This is a DEVCON test case for extracting and visualizing FIMs from different sources. We recommend you to use this data for testing purpose only
ABSTRACT:
This is a DEVCON test case for extracting and visualizing FIMs from different sources. We recommend you to use this data for testing purpose only
Created: June 2, 2026, 10:26 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test case for extracting and visualizing FIMs from nencarta for regions outside US. We recommend you to use this data for testing purpose only
Created: June 2, 2026, 9:30 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test case for extracting and visualizing FIMs from nencarta for regions outside US. We recommend you to use this data for testing purpose only
Created: June 2, 2026, 10:48 p.m.
Authors: Wagle, Pitamber
ABSTRACT:
This is a test case for extracting and visualizing FIMs from nencarta for regions outside US. We recommend you to use this data for testing purpose only
Created: June 25, 2026, 6:16 p.m.
Authors: Wagle, Pitamber · E. James Nelson · Hales, Riley · Demir, Ibrahim · Oldham, Sam
ABSTRACT:
This workshop walks through a complete pipeline for building a relational flood inundation map (FIM) database that integrates outputs from multiple modeling sources and ties them to the National Water Model. The motivating problem is fragmentation: flood maps are produced by NOAA OWP, FEMA, USACE, USGS, InFRM, and FHWA in different formats and at different standards, with no common platform connecting them to operational NWM forecasts. The proposed solution is an 8-table SQLite schema storing extent polygons, depth and water-surface-elevation rasters, rating curves, and source metadata, with each flood map linked to NWM feature IDs so that a forecasted flow can be used to retrieve the matching map on demand. Participants work through a four-stage Python workflow split across three Jupyter notebooks. The first stage generates HAND-based FIMs using FIMServe: an area of interest and HUC8 are selected, hydrofabric is pulled from the CIROH S3 bucket, return-period flows are retrieved through the NWM API, and HUC-8 flood maps are merged and clipped as needed. The second stage harmonizes maps from different models by aligning projection, resolution, data type, no-data representation, and grid alignment, then dissolves and smooths vector extents and compresses rasters to reduce file size. Metadata files are then generated to populate the database tables. The third stage builds and populates the SQLite database with content from HAND, HEC-RAS, SRH-2D, AutoRoute, FIER, and satellite-derived sources, and uploads the result to HydroShare. The fourth stage uses the Tulane FIM visualization tool to display flood scenarios, compare maps across models, and overlay custom user files. The workshop closes with implications for research and operations and a look at planned extensions for velocity, impact, and ensemble/probabilistic visualization.
Acknowledgements:
This research was supported by the Cooperative Institute for Research to Operations in Hydrology (CIROH) with funding under award NA22NWS4320003 from the NOAA Cooperative Institute Program. The statements, findings, conclusions, and recommendations are those of the author(s) and do not necessarily reflect the opinions of NOAA.