Watershed Assessment Model (WAM) : Calibration and Uncertainty and Sensitivity Analyses Task 1.1: WAM Simulated Existing Conditions Characterization Report and Model Validation Report - Final Soil and Water Engineering Technology, Inc. September 4, 2015 FDACS Contract No. 022589 Table of Contents 1 Introduction and Background .................................................................................................................................. 1 1.1 Introduction ........................................................................................................................................................... 1 1.2 Background ............................................................................................................................................................. 1 1.3 Objectives ................................................................................................................................................................ 2 2 The Watershed Assessment Model......................................................................................................................... 4 2.1 Model Approach .................................................................................................................................................... 4 2.2 Source Cell Modeling .......................................................................................................................................... 4 2.2.1 GLEAMS .......................................................................................................................................................... 5 2.2.2 EAAMOD ......................................................................................................................................................... 6 2.3 Hydrodynamic Routing ...................................................................................................................................... 8 3 Data Gathering and Formatting ............................................................................................................................. 10 3.1 Required Input Spatial (GIS) Datasets ....................................................................................................... 10 3.2 Data Acquisition .................................................................................................................................................. 10 3.2.1 GIS Datasets ................................................................................................................................................ 10 3.3 Databases ............................................................................................................................................................... 22 3.3.2 System Operations ................................................................................................................................... 25 3.4 Data preparation ................................................................................................................................................ 25 3.4.1 Reach Delineation ..................................................................................................................................... 25 3.4.2 GIS Dataset Reconciliation .................................................................................................................... 28 3.4.3 Time Series Dataset Preparation ....................................................................................................... 31 3.5 Conclusions ........................................................................................................................................................... 33 4 Model Results ................................................................................................................................................................ 33 4.1 Fisheating Creek ................................................................................................................................................. 34 4.1.1 Flows and Water Quality Data at SR-78 .......................................................................................... 34 4.1.2 Flow Data at US-27 ................................................................................................................................... 37 4.2 Indian Prairie ....................................................................................................................................................... 39 4.2.1 Flow and Water Quality Data at S-127 ............................................................................................ 39 4.2.2 Flow and Water Quality Data at S-129 ............................................................................................ 42 4.3 Lake Istokpoga .................................................................................................................................................... 45 4.3.1 Flow and Water Quality Data at S-68 ............................................................................................... 45 4.4 Lower Kissimmee ............................................................................................................................................... 48 4.4.1 Flow and Water Quality Data at S-65A ............................................................................................ 49 4.4.2 Flow and Water Quality Data at S-65C ............................................................................................ 51 4.4.3 Flow and Water Quality Data at S-65D ............................................................................................ 54 4.4.4 Flow and Water Quality Data at S-65E ............................................................................................ 57 4.5 Taylor Creek/Nubbin Slough ........................................................................................................................ 60 4.5.1 Flow and Water Quality Data at S-191 ............................................................................................ 60 4.5.2 Flow and Water Quality Data at S-133 ............................................................................................ 63 4.5.3 Flow and Water Quality Data at S-135 ............................................................................................ 66 4.6 Upper Kissimmee ............................................................................................................................................... 69 4.6.1 Flow and Water Quality Data at S-65 ............................................................................................... 69 5 Appendices ..................................................................................................................................................................... 73 5.1 FLUCCS/WAM Land Use ID Correspondence ......................................................................................... 73 1 Table of Tables Table 1. Coordinate system selected for the model project. ............................................................................... 10 Table 2. The top 30 land use acreages in the northern six Lake Okeechobee sub-watersheds. .......... 18 Table 3. Stations used for flow and water quality data listed by sub-watershed. Note that the second station (02273198) in the Lake Istokpoga sub-watershed (at S-68) has water quality data from 2005 onward. ............................................................................................................................................................... 23 Table 4. Structures used in the WAM simulations. ................................................................................................. 26 Table 5. Land uses that may be run using EAAMOD (if the soil type allows). ............................................. 29 Table 6. Listing of soils datasets obtained from NRCS by county. .................................................................... 31 Table 7. Rain station used in the WAM model setup. Some stations have multiple records, indicated by more than one DB key. .................................................................................................................................................. 32 Table 8. Comparison of measured and simulated water volumes at SR-78. ................................................ 35 Table 9. Statistics of daily flow values at SR-78. ...................................................................................................... 36 Table 10. Comparison of measured and simulated water volumes at US-27. ............................................. 38 Table 11. Statistics of daily flow values at US-27. ................................................................................................... 39 Table 12. Comparison of measured and simulated water volumes at S-127. In 2003 and 2007, there was no measured flow, so the ratio could not be determined, indicated by “N/A”. ...................... 40 Table 13. Statistics of daily flow values at S-127..................................................................................................... 41 Table 14. Comparison of measured and simulated water volumes at S-129. In 2007 there was no measured flow, so the ratio could not be determined, indicated by “N/A”. .................................................. 43 Table 15. Statistics of daily flow values at S-129.