Output:Run Summary File

The run summary contains a summary for each event simulated and simulation totals after the last event summary. For each event the run summary file contains a number of sections: title, start-up inputs, mass-conservation, warnings, and outputs. If Richards’ equation is used to simulate the unsaturated zone a separate mass-conservation section is included in each event summary. If saturated groundwater is simulated then a separate mass-conservation is included in each event summary. The following is an example of the run summary file output for a continuous simulation with a single event. In this example Richards’ equation is used to simulate the unsaturated zone and lateral groundwater flow is calculated, along with interaction with the stream network.

_________GSSHA start-up information________
Run parameters read from WMS project file: 10gw.prj
reading watershed mask from file: test.mask
number of grid cells in watershed: 110
reading elevation map from file: elev_file
reading soil map from file: test.mask
reading water table map from file: test.wt
reading aquifer bottom map from file: test.gwb
Inital volume of water in root zone= 4989.621857 
 
Inital volume of water in soil column= 574165.748622 
 
reading groundwater boundary file: test.bound
reading hyd. cond. map from file: hycond_file
reading link map from file: test2.link
reading node map from file: test2.node
reading channel input data from file test.chan1
Initial soil water volume= 24948.109285 
writing output for optimization to file 
using precipitation data from file: one_event.gag
Running.... 

       GSSHA LONG-TERM RUNOFF SIMULATION SUMMARY- EVENT 1
Event began on strict Julian date:                    2445113.04166667
Event ended on strict Julian date:                    2445113.66111111
Event began on 05/23/1982 at 13:00  GMT -6.0 hours.

GSSHA used NCDC/SAMSON hydrometeorological data from the MEMPHIS                station
Hydrometeorology data began on: 05/24/1982 at  3:00
and ended on:                   07/01/1982 at  0:00
The following number of hydromet. data points were repaired:0
Penman-Monteith evapo-transpiration was calculated.

With raingage data using Thiessen polygon interpolation.

time step                                  60.0 seconds
elevation and gridsize are in meters
initial basin-averaged soil water content:16.21 percent
number of time steps with rain:             630
elapsed time when rain began:             2204.00
 
peak occured on strict Julian date:                 2445113.45486111
date/time of peak discharge:           5/23/1982  22:55:00
peak discharge (cms):                      4.22
 
initial volume on overland (cu. m):        0.0
initial volume in channels (cu. m):        0.0
inital volume of snow (cu. m):             0.0
 
volume of rainfall (cubic meters):    225500.0
volume of discharge (cu. m):          122219.5
volume of infiltrated water (cu. m):   99579.3
volume of water exfiltrated (cu. m):       0.0
volume of lateral inflow (cu. m):     122652.2
volume of gw to chan (cu. m):           -402.6
volume from overland point sources         0.0

volume remaining on surface (cu. m):    2005.3
final volume in channels (cu. m):         29.9
final volume of snow (cu. m):              0.0
 
mass conservation error:             0.0001 percent

 
 Richard's EQ. Computations 
 
volume lost due to dir. evap (cu. m):     1263.3
net vol infiltrated to soil (cu. m.):    99354.7
volume to deep ground water (cu. m):      1025.9
Initial volume in soils (cu. m.):       574198.2
Final volume in soils (cu. m.):         670524.7
Richard equation mass balance error         -0.1902 percent
Number of cells at start of event           9595
Number of cells at end of event             9589
net volume of infiltration is infiltration minus evaporation

 
 GROUNDWATER CALCULATION SUMMARIES FOR EVENT 
 
volume of water directly to surface from groundwater (cu. m):       0.0
beginning vol of water exfiltrated this event (cu. m):              0.0
total vol of water exfiltrated this run (cu. m):                    0.0
vol from gw to unsat this event (cu. m):                         -910.1
vol from gw to chan  this event (cu. m):                         -402.6

final basin-averaged soil water content:74.69 percent

 THE FOLLOWING WARNINGS ARE GIVEN:
No Warnings.

 THE FOLLOWING INPUTS WERE READ:
A WMS Project File was used.
Floating point GRASS maps were read.

 THE FOLLOWING PROCESSES WERE SIMULATED:
Explicit diffusive-wave channel routing.
Uniform overland roughness.
Infiltration by Richards Eq.

 THE FOLLOWING OUTPUT MAPS WERE WRITTEN EVERY 60 TIME STEP(S):
ASCII WMS maps of:
     overland flow depth.

 THE FOLLOWING ASCII OUTPUT FILES WERE WRITTEN TO EVERY 1 TIME STEP(S):
     hydrograph at the catchment outlet.

 
SIMULATION TOTALS
 
GROUNDWATER CALCULATIONS 

GW volume start =                  58878050.00 
GW volume end =                    58880266.51 
Sat/unsat. trickery =                     0.00 
Exfiltration back on overland =           0.00 
Infiltration to groundwater =           900.98 
Total inputs to groundwater=           2212.47 
Mass Balance error =                     -0.00 

 
GLOBAL MASS BALANCE CALCULATIONS 
All volumes are in cubic meters 
 
Initial volume on surface=                 0.00 
Initial volume in channels=                0.00 
Initial volume in soils=              574165.75 
Initial volume in groundwater=      58878050.00 
 
Final volume on surface=                2005.27 
Final volume in channels=                 29.94 
Final volume in soils=                670524.67 
Final volume in groundwater=        58880266.51 
Final volume of snow=                      0.00 
 
Total amount of precip=               225500.00
Total amount of infiltration=          99579.28
Total amount of evaporation=            1576.53
Total direct evaporation=               1263.26
Total flux from unsat to gw=             900.98
Total amount of discharge=            122219.46
Total flux of gw across bounds=            0.00
Total flux from gw to river=            -402.57
Total amount of exfiltration=              0.00
Total overland point sources=              0.00
 
Mass balance error of inputs=          0.000094 percent
 
Overall mass balance error =          -0.001836 percent