Converting a NEXRAD Rainfall Map into a Flood Inundation Map by ...

More documents

Recommendations

Info

• INST-VAL: Instantaneous flow at the end of each time intervalwith units “cms” or “cfs”. Used for time intervals less than 24hours.Len_sType (I): The length of sType. Programmatically set as “Length(sType).lPLAN (I): An argument to indicate whether or not to write over existingdata.0: Always write over existing data1: Only replace missing data flags in the record (DSS flag for missingvalues is -901.0)4: If an input value is missing (-901.0), do not allow it to replace a nonmissingvalue in existing record (keep the existing known value)ISTAT (O): A status parameter indicating the success of the writingoperation. Its possible values are:0: The data was successfully stored.4: all of the inputs provided were missing data flags (-901.0).10: A fatal error occurred.11: The number of values to store (NVALS) is less than one.12: Unrecognized time interval.15: The starting date or time is invalid.24: The pathname given does not meet the regular-interval time seriesconventions.51: Unrecognized data compression scheme. Valid schemes are 0 to 5.90
52: Invalid precision exponent specified for the delta data compressionmethod. The precision exponent range is -6 to 6.Based on the previous parameter definition for ZSRTS, the applicationneeds to extract and generate HEC-DSS Element descriptors for each subbasin’shyetograph from the existing DSSTSType table. This table contains all the neededarguments (pathname and headings) for the data exchange process performed <strong>by</strong>the functions inside the heclib50.dll library in charge of the HEC-DSSimport/export of time series and paired data datasets (that is, ZOPEN, ZSRTS,ZCLOSE).Once the application extracts all the HEC-DSS descriptors from theDSSTSType table for each of the watersheds of the study area it places them in a2-dimensional array in which the first dimension represents the number of thewatershed and the second dimension contains the specific DSS descriptor(pathname parts) being stored (Figure 4.9).91
Page 3 and 4:
Table of ContentsList of Figures ..
Page 5 and 6:
4.1.12 The XML2GDB Script Tool ....
Page 7 and 8:
Figure 3.24 Components of a Steady
Page 9 and 10:
Figure 4.50 Create Flood Inundation
Page 11 and 12:
Chapter 1 Introduction1.1 BACKGROUN
Page 13 and 14:
for undeveloped or natural conditio
Page 15 and 16:
All the previous statements favor t
Page 17 and 18:
science, and engineering models as
Page 19 and 20:
Different approaches have been used
Page 21 and 22:
generic and self-described formats,
Page 23 and 24:
externally executed from a central
Page 25 and 26:
though GIS-based, the system does n
Page 27 and 28:
Geographic Information Systems, Arc
Page 29 and 30:
By defining the three basic functio
Page 31 and 32:
containing an inventory of damage s
Page 33 and 34:
Data Models in charge of storing an
Page 35 and 36:
Figure 3.1 Floodplain Modeling Sche
Page 37 and 38:
either with Schematic Nodes (for Su
Page 39 and 40:
channel cross sections, available H
Page 41 and 42:
sequential data, called pathnames,
Page 43 and 44:
Figure 3.5 NEXRAD square cells (873
Page 45 and 46:
geodatabase formatted with the Arc
Page 47 and 48:
The CrossSection feature class in A
Page 49 and 50: geodatabase (under Arc Hydro format
Page 51 and 52: 3.4.4 External Execution of HEC-RAS
Page 53 and 54: analysis. In particular, GIS has be
Page 55 and 56: 3.5.3 Model-Specific ElementsA geog
Page 57 and 58: Figure 3.11 Geographic and Hydrolog
Page 59 and 60: For HEC-RAS, the connectivity is ac
Page 61 and 62: cross sections in the hydraulic mod
Page 63 and 64: Section line for a RAS cross-sectio
Page 65 and 66: from the geodatabase back into the
Page 67 and 68: Figure 3.19 Relationship Classes fo
Page 69 and 70: Figure 3.20 DSS Time Series content
Page 71 and 72: Figure 3.22 Extended Time Series Co
Page 73 and 74: Figure 3.23 Creating a Flow File fr
Page 75 and 76: etween the HEC-DSS file system and
Page 77 and 78: The more specific steps for the pos
Page 79 and 80: Chapter 4 Map2Map Components4.1 MOD
Page 81 and 82: A subset of NEXRAD time series data
Page 83 and 84: A folder location is also provided
Page 85 and 86: Figure 4.4 Radar2GDB Model Componen
Page 87 and 88: ecords. Figure 4.6 illustrates the
Page 89 and 90: Figure 4.8 Time Series Tables and R
Page 91 and 92: having different formats and that a
Page 93 and 94: Part E: Time Interval of stored dat
Page 95 and 96: execution time and for their corres
Page 97 and 98: on the steps needed to transfer the
Page 99: Len_sBTime (I): The length of the s
Page 103 and 104: methods: user hyetograph, user gage
Page 105 and 106: Once the hyetograph is defined (for
Page 107 and 108: The resulting runoff hydrograph is
Page 109 and 110: Thus, the time period for the entir
Page 111 and 112: After the ZSRTS subroutine is execu
Page 113 and 114: Figure 4.12 HMSCaller Model Compone
Page 115 and 116: ased on a process handle (a program
Page 117 and 118: These simple command line statement
Page 119 and 120: To programmatically accomplish this
Page 121 and 122: to provide the hydraulic input for
Page 123 and 124: information into the extended Arc H
Page 125 and 126: The HydroJunction, used for connect
Page 127 and 128: Once the identification of flow cha
Page 129 and 130: As with the GDB2HMSDSS, the first t
Page 131 and 132: 4.1.7 Time Series ExtractionOnce th
Page 133 and 134: accomplish this have been developed
Page 135 and 136: straight forward for all time stamp
Page 137 and 138: As opposed to HEC-DSS, the Arc Hydr
Page 139 and 140: Table 4.4: Variable Type Equivalenc
Page 141 and 142: ZCAT DSS subroutines) and stored in
Page 143 and 144: Table 4.5: Time Interval Equivalenc
Page 145 and 146: There are not specific valid values
Page 147 and 148: catalog list. For the DSS2GDB appli
Page 149 and 150: 4.1.9.1 Opening the HEC-DSS fileThe
Page 151 and 152:
channel (the hydraulic representati
Page 153 and 154:
the model if the new configuration
Page 155 and 156:
the main program as a public module
Page 157 and 158:
Then, the RASCaller application acc
Page 159 and 160:
Figure 4.31 ProjectName Property in
Page 161 and 162:
Figure 4.33 RunSteady Method in RAS
Page 163 and 164:
Figure 4.34 ExportGIS Method in RAS
Page 165 and 166:
data structures delivered by every
Page 167 and 168:
The two most well-known models for
Page 169 and 170:
The water surface elevations obtain
Page 171 and 172:
Once the water surface elevations f
Page 173 and 174:
Generate a suitable water surface m
Page 175 and 176:
Figure 4.42 2 Foot-Contour Lines fo
Page 177 and 178:
Figure 4.43 Rosillo Creek’s terra
Page 179 and 180:
standard ArcGIS tool), is used in M
Page 181 and 182:
By doing this, the water surface el
Page 183 and 184:
Figure 4.49 Create Flood Polygon Mo
Page 185 and 186:
Int OperationThe Integer operation
Page 187 and 188:
case that was developed for Map2Map
Page 189 and 190:
contours (isohyetals) or by interpo
Page 191 and 192:
design storm input given its possib
Page 193 and 194:
Figure 4.55 Workflow for Extracting
Page 195 and 196:
for it. Finally, the DigitalStorm2H
Page 197 and 198:
model for water resources (Maidment
Page 199 and 200:
Hydro, the HydroJunctionHasCrossSec
Page 201 and 202:
involved in the transformation of r
Page 203 and 204:
process model in sequence. For the
Page 205 and 206:
5.6 A TRUE SPATIAL APPROACHAutomate
Page 207 and 208:
time series between NEXRAD, the HEC
Page 209 and 210:
value of the entire runoff hydrogra
Page 211 and 212:
case study. Bigger watersheds (abov
Page 213 and 214:
The first step consists in installi
Page 215 and 216:
3.7 Map2Map UsageAll of the model b
Page 217 and 218:
Congratulations! You have successfu
Page 219 and 220:
Once the simplified version of Arc
Page 221 and 222:
cells that cover your study area an
Page 223 and 224:
Second, the user needs to modify th
Page 225 and 226:
Appendix BMap2Map CD Content1 CD Da
Page 227 and 228:
o hmsproj - contains folders with H
Page 229 and 230:
Goodchild, M.F., Steyaert, L.T., an
Page 231 and 232:
Olsen R. J., Beling, P. A., Lambert
Page 233 and 234:
Werner, M. G. F. 2001. Impact of gr
show all

Converting a NEXRAD Rainfall Map into a Flood Inundation Map by ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?