Hydrologic Models:

• Detailed watershed maps: USGS/Soil Conservation Service/FEMA Flood Insurance Maps / State DNR / Local Agencies;
• Land use data (agricultural, grass land, parks, forest, ponds / streams, roadways, residential, urban, industrial, etc.) from above sources including county / city / village maps increasing usage of GIS by more townships;
• Data related to land slopes, township drainage patterns, sedimentation ponds and outfall locations and data maintained by sewage and water treatment plants;
• Weather data (precipitation and temperature) for specific storms (NWS and other local agency gages);
• Stream gauge data for the period-of-record (USGS, NWS, Corps of Engineers);
• Cross sections of stream, bed slope and flood plain features -- at a minimum, we need to capture reasonably good estimates of channel stage versus storage;
• Environmental assessment / impact statement reports related to highways and other construction projects;
• Data from any agriculture/irrigation experiment stations;
• Hydrologic reports (from state/local agencies / universities / A&E firms) related to the project area or similar watersheds in the area to be able to utilize data such as calibrated watershed parameters and flood flow simulations.

Hydraulic Models:

• Existing stream data related to cross sections, channel reach bed slopes, bridges / culverts / weirs and channel reach roughness, new cross sectional data, if needed, and flood plain features;
• Computed flood hydrographs for specific and synthetic storms from a hydrologic model such as HSPF or HEC1 or Soil Conservation Service watershed model etc.;
• Local inflows and muncipal / industrial withdrawals and discharges from and to the stream;
• The data source for the above may be available from previous hydrologic / hydraulic / environmental reports; if not readily available they will have to be developed from results of a hydrologic model.

Sediment Transport Model:

• Data Sources - USGS / SCS / USEPA / State DNR;
• Previous investigations and measurements for the stream in question (or similar one in the area) to obtain estimates of suspended sediment concentrations for a range of flood flows including data related to sediment classification and gradation;
• Most importantly, estimates of sediment yield from the watershed in question or similar watersheds in the area;
• Additional sediment survey data from bed load/suspended load samplers;
• Laboratory data related to critical shear stress for sediment materials of interest (from literature);
• Input data required by hydrologic / hydraulic models related to channel geometry, reach slopes, roughness etc as described above; Output from hydrologic / hydraulic models such as flood hydrographs / velocities / stages.

Contaminant Transport Model:
This model would require the identification of the chemical species, dispersivity coefficients (or approximate dispersion coefficients), sediment adsorption coefficients and the output from hydraulic model in the form of velocity field. The dimensionality of the model is expected to be the same as the hydrodynamic model.