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# Fort.15 file format

The basic file structure of the fort.15 file is shown below. Each line of input data is represented by a line containing the input variable name(s). **Blank lines and headings are only to enhance readability.** Loops indicate multiple lines of input.

## Main Controls

### Metadata and Logging

`RUNDES`

`RUNID`

`NFOVER`

`NABOUT`

`NSCREEN`

### Numerics & Physics

`IHOT`

`ICS`

`IM`

`IDEN`

* include this line only if IM = 20, 21, 30, 31, or if IM's last 6-digit entry is > 4 (e.g., 51311*

**5**).

`NOLIBF`

`NOLIFA`

`NOLICA`

`NOLICAT`

`NWP`

*for j=1 to*

`NWP`

*end j loop*

`NCOR`

`NTIP`

`NWS`

`NRAMP`

`G`

`TAU0`

`Tau0FullDomainMin, Tau0FullDomainMax`

* - include this line only if TAU0 = -5.0.*

`DTDP`

`STATIM`

`REFTIM`

Meteorological controls including

`WTIMINC, RSTIMINC`

, and others*- include this line for most cases of*

`NWS ≠ 0`

, see linked page for details.`RNDAY`

Ramping controls including

`DRAMP, FluxSettlingTime`

, and others*- include this line if*

`NRAMP > 0`

, see linked page for details`A00, B00, C00`

`H0`

*- include this line if*

`NOLIFA = 0`

or `1`

`H0`

, `INTEGER`

, `INTEGER`

, `VELMIN`

*- include this line if*

`NOLIFA = 2`

or `3`

`SLAM0, SFEA0`

`TAU`

*include this line only if*

`NOLIBF = 0`

`CF`

*- include this line only if*

`NOLIBF = 1`

`CF`

, `HBREAK`

, `FTHETA`

, `FGAMMA`

*- include this line only if*

`NOLIBF = 2`

`ESLM`

*- include this line only if*

`IM = 0`

, `1`

, or `2`

`ESLM, ESLC`

*- include this line only if*

`IM = 10`

`CORI`

### Periodic (Tidal) Body Forcing

end k loop

### Periodic (Tidal) Boundary Elevations

end k loop

for k=1 to NBFR

end k loop

### Periodic (Tidal) Boundary Velocities

ANGINN

NFFR - include this line only if IBTYPE = 2, 12, 22, 32 or 52 in the Grid and Boundary Information File

for k=1 to NFFR

end k loop

for k=1 to NFFR

- ALPHA(k)
- for j=1 to NVEL

- QNAM(k,j), QNPH(k,j) - use this line if IBTYPE = 2, 12, 22 in the Grid and Boundary Information File
- QNAM(k,j), QNPH(k,j), ENAM(k,j), ENPH(k,j) - use this line if IBTYPE = 32 in the Grid and Boundary Information File

- QNAM(k,j), QNPH(k,j) - use this line if IBTYPE = 2, 12, 22 in the Grid and Boundary Information File
- end j loop

end k loop

### Model Output

NOUTE, TOUTSE, TOUTFE, NSPOOLE

NSTAE

for k=1 to NSTAE

- XEL(k), YEL(k) - use these lines if NSTAE is positive. If negative, stations are listed in the elev_stat.151 file

end k loop

NOUTV, TOUTSV, TOUTFV, NSPOOLV

NSTAV

for k=1 to NSTAV

- XEV(k), YEV(k) - use these lines if NSTAV is positive. If negative, stations are listed in the vel_stat.151 file

end k loop

NOUTC, TOUTSC, TOUTFC, NSPOOLC - include this line only if IM =10

NSTAC - include this line only if IM =10

for k=1 to NSTAC

end k loop

NOUTM, TOUTSM, TOUTFM, NSPOOLM - include this line only if NWS is not equal to zero.

NSTAM - include this line only if NWS is not equal to zero.

for k=1 to NSTAM

- XEM(k), YEM(k) - use these lines if NSTAM is positive. If negative, stations are listed in the met_stat.151 file

end k loop

NOUTGE, TOUTSGE, TOUTFGE, NSPOOLGE

NOUTGV, TOUTSGV, TOUTFGV, NSPOOLGV

NOUTGC, TOUTSGC, TOUTFGC, NSPOOLGC - include this line only if IM =10

NOUTGW, TOUTSGW, TOUTFGW, NSPOOLGW - include this line only if NWS is not equal to zero.

#### Harmonic Analysis

end k loop

THAS, THAF, NHAINC, FMV

NHASE, NHASV, NHAGE, NHAGV

#### Hotstart Output and Numeric Controls

NHSTAR, NHSINC

ITITER, ISLDIA, CONVCR, ITMAX

*For a 2DDI ADCIRC run that does not use netCDF, the file ends here. For any ADCIRC run that uses netCDF, the lines *`NCPROJ`

* through *`NCDATE`

* (described in the #NetCDF Control section below) are required metadata and must be added at the end of the fort.15 file.*

## 3D Model Run

IDEN

ISLIP, KP

Z0S,Z0B

ALP1,ALP2,ALP3

IGC, NFEN

for k=1 to NFEN (include this loop only if IGC = 0, k=1 at bottom, k= NFEN at surface)

end k loop

IEVC, EVMIN, EVCON

for k=1 to NFEN (include this loop only if IEVC = 0, k=1 at bottom, k= NFEN at surface)

end k loop

THETA1, THETA2(include this line only if IEVC = 50 or 51)

I3DSD,TO3DSDS,TO3DSDF,NSPO3DSD

NSTA3DD

for k=1 to NSTA3DD

end k loop

I3DSV,TO3DSVS,TO3DSVF,NSPO3DSV

NSTA3DV

for k=1 to NSTA3DV

end k loop

I3DST,TO3DSTS,TO3DSTF,NSPO3DST

NSTA3DT

for k=1 to NSTA3DT

end k loop

I3DGD,TO3DGDS,TO3DGDF,NSPO3DGD

I3DGV,TO3DGVS,TO3DGVF,NSPO3DGV

I3DGT,TO3DGTS,TO3DGTF,NSPO3DGT

The following line will be read in if IM is 21 or 31.

RES_BC_FLAG, BCFLAG_LNM, BCFLAG_TEMP

The following two lines will be read in if RES_BC_FLAG is negative.

RBCTIMEINC

BCSTATIM

The following two lines will be read in if RES_BC_FLAG = 2.

RBCTIMEINC, SBCTIMEINC

BCSTATIM, SBCSTATIM

The following two lines will be read in if RES_BC_FLAG = 3.

RBCTIMEINC, TBCTIMEINC

BCSTATIM, TBCSTATIM

The following two lines will be read in if RES_BC_FLAG = 4.

RBCTIMEINC, SBCTIMEINC, TBCTIMEINC

BCSTATIM, SBCSTATIM, TBCSTATIM

The following two lines will be read in if RES_BC_FLAG = 3 or 4 and BCFLAG_TEMP is not equal to 0.

TTBCTIMEINC, TTBCSTATIM

TTBCTIMEINC

The following two lines will be read in only if IM is 21 or 31.

SPONGEDIST

EQNSTATE

The following lines will be read in only if IDEN is > 0.

NLSD, NVSD

NLTD, NVTD

ALP4

The following line will be read in only if IDEN = 3 or 4.

NTF

## NetCDF Control

The following lines will be read in only if the NetCDF output or hotstart format is chosen

NCPROJ

NCINST

NCSOUR

NCHIST

NCREF

NCCOM

NCHOST

NCCONV

NCCONT

NCDATE

## Namelists

The following Fortran namelist lines are optional, but if they appear, they must appear at the very end of the fort.15 file.

&metControl WindDragLimit=floatValue, DragLawString='stringValue', rhoAir=floatValue, outputWindDrag=logicalValue /

&timeBathyControl NDDT=integerValue, BTIMINC=floatValue, BCHGTIMINC=floatValue /

&waveCoupling WindWaveMultiplier=floatValue /

&SWANOutputControl SWAN_OutputHS=logicalValue, SWAN_OutputDIR=logicalValue, SWAN_OutputTM01=logicalValue, SWAN_OutputTPS=logicalValue, SWAN_OutputWIND=logicalValue, SWAN_OutputTM02=logicalValue, SWAN_OutputTMM10=logicalValue /

&subdomainModeling subdomainOn=logicalValue/

&wetDryControl outputNodeCode=logicalValue, outputNOFF=logicalValue, noffActive=logicalValue /

&inundationOutputControl inundationOutput=logicalValue0, inunThresh =floatValue /

&TVWControl use_TVW=logicalValue, TVW_file='stringValue', nout_TVW =integerValue, touts_TVW =floatValue, toutf_TVW=floatValue, nspool_TVW =integerValue /

&WarnElevControl WarnElev=floatValue, ErrorElev=floatValue, WarnElevDump=logicalValue, WarnElevDumpLimit=integerValue /