Here are the data types with brief descriptions:

Mconstants_and_conversions	This module contains physical constants and convenience functions aimed at performing unit conversions. The functions included in this module perform conversions between various temperature and distance units
Cbounds_t
Coperator(.approxequal.)
Cc_to_f	Establish generic interfaces to single and double precision functions
Cf_to_c
Cf_to_k
Cc_to_k
Cdeg_to_rad
Crad_to_deg
Casfloat
Casdouble
Casint
Caslogical
Cmm_to_in
Cin_to_mm
Cclip
Mdata_catalog	Defines the DATA_CATALOG_T data type, which contains type-bound procedures to add, delete, and find DATA_CATALOG_ENTRY_T values created during the course of a SWB run
Cdata_catalog_t
Mdata_catalog_entry
Cdata_catalog_entry_t
Capply_scale_and_offset
Mdatetime	This module contains the DATETIME_T class and associated time and date-related routines, along with the MONTH_T class which defines month names and three-letter abbreviations
Cassignment(=)
Coperator(>)
Coperator(<)
Cdatetime_t
Cmonth_t	Container for month name and length information
Mdictionary
Cdict_entry_t
Cdict_t
Mexceptions
Cassert
Cindex_values_valid
Mfile_operations
Cascii_file_t
Mfstring
Coperator(+)
Coperator(.strequal.)
Coperator(.strapprox.)
Coperator(.contains.)
Coperator(.containssimilar.)
Cascharacter
Cas_character
Cas_integer
Cas_float
Cchomp
Cfieldcount
Cclean
Csquote
Cdquote
Creplace
Casuppercase
Caslowercase
Ctouppercase
Ctolowercase
Cas_uppercase
Cas_lowercase
Cto_uppercase
Cto_lowercase
Cright
Cleft
Cf_to_c_str
Cc_to_f_str
Mfstring_list
Cassignment(=)
Cfstring_list_t
Csplit
Ccreate_list
Calpha_sort_group_t
Cint_sort_group_t
Cfloat_sort_group_t
Mgrid	Provides support for input and output of gridded ASCII data, as well as for creation and destruction of grid data structures (defined types)
Cpj_init_and_transform	Interface to C code that provides a simplified entry point to PROJ4 capabilities: it has been modified so that all C pointers are kept within the C code; no pointers are returned to fortran
Cgeneral_grid_t
Cgrid_bounds_t
Cerror_message_t
Cgrid_create
Mlogfiles
Clogfile_t
Mmodel_domain
Cmodel_domain_t
Carray_method
Cindex_method
Cminmaxmean
Ccell_col_row_t
Mmodel_initialize
Cgridded_datasets_t
Cmethods_list_t
Mnetcdf4_support	Provide support for use of netCDF files as input for time-varying, gridded meteorlogic data, or output for any SWB-generated variable
Ct_netcdf_dimension
Ct_netcdf_attribute
Ct_netcdf_variable
Ct_netcdf4_file
Mnetcdf_c_api_interfaces	Provides Fortran interfaces to the NetCDF C API. This approach is much more straightforward than using the old Fortran 90 NetCDF interface, which was built on top of the Fortran 77 interface, which (finally) was built atop the C interface
Cnc_create
Cnc_def_var_deflate
Cnc_def_var
Cnc_def_dim
Cnc_enddef
Cnc_redef
Cnc_get_var_short
Cnc_put_var_short
Cnc_get_var_int
Cnc_put_var_int
Cnc_get_var_float
Cnc_put_var_float
Cnc_get_var_double
Cnc_put_var_double
Cnc_get_vars_short
Cnc_put_vars_short
Cnc_get_vars_int
Cnc_put_vars_int
Cnc_get_vars_float
Cnc_put_vars_float
Cnc_get_vars_double
Cnc_put_vars_double
Cnc_get_att_text
Cnc_get_att_int
Cnc_get_att_short
Cnc_get_att_float
Cnc_get_att_double
Cnc_inq_attname
Cnc_inq_att
Cnc_inq_var
Cnc_inq_dim
Cnc_strerror
Cnc_inq_format
Cnc_inq_dimname
Cnc_inq_unlimdim
Cnc_inq_ndims
Cnc_inq_nvars
Cnc_inq_natts
Cnc_put_att_text
Cnc_del_att
Cnc_put_att_int
Cnc_put_att_float
Cnc_put_att_double
Cnc_copy_att
Cnc_open
Cnc__open
Cnc_close
Moutput
Cnetcdf_file_collection_t
Coutput_specs_t
Mparameters
Cparameters_t
Mprecipitation__method_of_fragments	Module precipitation__method_of_fragments provides support for creating synthetic daily precipitation given grids of monthly sum precipitation and a "fragments" file. The fragments file is generated from observations at discrete locations, the values of which range from 0 to 1, and the sum of which is 1. The fragment value is simply the daily observed precipitation value divided by the monthly sum of all observed precipitation values for that station
Cfragments_t	Data structure that holds a single line of data from the input rainfall fragments file
Cptr_fragments_t	Pointer to a rainfall fragments data structure
Cfragments_set_t	Data structure to hold the current active rainfall fragments for a particular rain gage zone
Cfragments_sequence_t	Data structure to hold static (pre-calculated) fragment selection numbers
Mrunning_grid_stats
Crunning_stats_t
Msimulation_datetime
Cdate_range_t
Mswbstats2_support
Clength_unit_t
Cvolume_unit_t
Cfile_collection_t
Cswbstats_t
Mtimer
Ctimer_t