Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 1234]

►Nbmi
CBmi
►Ndata_access
CDataProvider
CDeferredWrappedProvider	A specialized @WrappedDataProvider that is created without first knowing the backing source it wraps
COptionalWrappedDataProvider	Extension of DeferredWrappedProvider, where default values can be used instead of a backing provider
CWrappedDataProvider	Simple implementation that basically wraps another instance
►Nexternal
CExternalIntegrationException	Custom exception indicating a problem when integrating with some external component
►Ngeojson
CCollectionFeature
CFeatureBase	Represents an individual feature within a Geojson definition
CFeatureCollection
CFeatureVisitor	An abstract class used to operate on the children of FeatureBase
►CJSONProperty	@TODO: Convert JSONProperty into a variant of the supported types
CAsVectorVisitor	Visitor to filter boost variants by type T into a vector of type T
CLineStringFeature
CList	Struct wrapping a vector of JSONProperty representing a JSON list
CMultiLineStringFeature
CMultiPointFeature
CMultiPolygonFeature
CObject	Struct wrapping a nested PropertyMap representing a JSON object
CPointFeature
CPolygonFeature	Represents a feature based around a polygon defining an area
CSentinelFeature
►Nhy_features	HY_HydroLocation: class representing a hydrologic position
►Nhydrolocation
CHY_DistanceFromReferent
CHY_HydroLocation
CHY_IndirectPosition
CHY_Features	Collection interface to HY_Features objects and their associated model formulations
►Nmodels
►Nbmi
►Nprotocols
CContext
CNgenBmiProtocol
CNgenBmiProtocols
CNgenMassBalance
CProtocolError
CAbstractCLibBmiAdapter
CBmi_Adapter	Abstract adapter interface for C++ classes to interact with the essential aspects of external models that implement the BMI spec but that are written in some other programming language
CBmi_C_Adapter	An adapter class to serve as a C++ interface to the essential aspects of external models written in the C language that implement the BMI
CBmi_Cpp_Adapter	A thin wrapper class to provide convenience functions around raw BMI models written in C++, especially those loaded dynamically from libraries
►Nexternal
CState_Exception	Custom exception indicating bad external model state
►Nnetwork
CNetwork	A lightweight, graph based index of hydrologic features
Cpreorder_visitor	Pre-order recording dfs_visitor
CVertexProperty
►Nngen
►Ngeopackage
►Cwkb	A recursive WKB reader
Cwgs84
►Nsqlite
►Cdatabase
Cdeleter	Deleter used to provide smart pointer support for sqlite3 structs
Citerator
Csqlite_error
►Nsrs
Cepsg
►Ntraits
Cbool_pack
Ctype_list
CDomainLayer
CLayer
CLayerDataStorage	A class to hold and manage layer metadata for the system
CLayerDescription	A simple structure to hold meta data related to a computational layer
CSurfaceLayer
►Nnonstd
►Ndetail
Cin_place_index_tag
Cin_place_type_tag
Cin_place_t
►Nrealization
►Nconfig
CConfig	Structure representing the configuration for a general Formulation
CForcing	Structure for holding forcing configuration information
CFormulation
CLayer	Layer configuration information
COutput	Parsed representation of a realization config's output settings
COutputDomain	Settings for one output domain (catchment or nexus)
CRouting
CTime	Simple structure for holding time bounds and output interval (seconds)
CBmi_C_Formulation
CBmi_Cpp_Formulation	Encapsulates a bmi::Bmi model in C++ such that it can be loaded as a formulation, as such also so that it can be dynamically loaded from a shared library file
CBmi_Formulation	Abstraction of formulation with backing model object(s) that implements the BMI
CBmi_Module_Formulation	Abstraction of a formulation with a single backing model object that implements the BMI
CBmi_Multi_Formulation	Abstraction of a formulation with multiple backing model object that implements the BMI
CBmi_Var_Details	Type to hold some certain details about a BMI module variable that the framework will need to use repeatedly
CCatchment_Formulation
CConfigurationException	Custom exception indicating a problem when integrating with the provided realization configuration
CFormulation
CFormulation_Manager
►Nstd	STL namespace
Chash< nonstd::expected< T &, E > >
Chash< nonstd::expected< T, E > >
Chash< nonstd::expected< void, E > >
►Nutils
CCatchmentCsvOutputMgr	CSV backend for catchment output
CCatchmentOutputsMgr	Abstract class for managing and writing to catchment data files
CFeatureDescriptor	One feature's output schema, supplied to a manager at construction
CFileChecker	Simple utility class for testing things about one or more files
CFileStreamHandler
CNexusOutputsMgr	Abstract class for managing and writing to nexus data files
CNullStream
COutputField	One output column: the mapping from a source variable to its output, positionally aligned with the values a formulation supplies to CatchmentOutputsMgr::receive_data_entry
CPerNexusCsvOutputMgr	Subtype that manages/writes per-nexus data files in CSV format
CStreamHandler	This class provides a copyable interface to a std::ostream or std::ostream like object that may not support being copied
Ctime_marker	Simple helper struct for tracking meaningful points in time for output writing
Cadd_to_summed_nexus
CAORC_data
CBmi
CBoundingBox
CCatchmentAggrDataSelector
CCell
Ccompleted_time_step
CCsvPerFeatureForcingProvider	Forcing class providing time-series precipiation forcing data to the model
CCSVReader
CFeature_Test
CFeatureCollection_Test
Cforcing_params	Forcing_params providing configuration information for forcing time period and source
CGM_Object
CGridDataSelector
CGridSpecification
CHY_CartographicRealization
CHY_Catchment
CHY_CatchmentAggregate
CHY_CatchmentArea
CHY_CatchmentDivide
CHY_CatchmentRealization
CHY_DendriticCatchment
CHY_FlowPath
CHY_HydroFeature
CHY_HydroNetwork
CHY_HydroNexus
CHY_InteriorCatchment
CHY_PointHydroNexus
Cinvalid_downstream_request
Cinvalid_time_step
CJSONGeometry_Test
CJSONProperty_Test
CMultiLayerParserTest
CNetwork_Test
CNetwork_Test1
CNetwork_Test2
CNexus_Remote_Test
CNexus_Test
CNgenSimulation
CNullForcingProvider	Forcing class that returns no variables to the simulation–use this e.g
CPartition_One
CPartitionData
CPartitions_Parser
Crequest_from_empty_nexus
CReservoirKernelTest
CReservoirTimelessKernelTest
Crouting_params	Routing_params providing configuration information for routing
CSelectorConfig
CSimulation_Time	Simulation Time class providing time-series variables and methods to the model
Csimulation_time_params	Simulation_time_params providing configuration information for simulation time period
►CUnitsHelper
Cunit_conversion_exception
Cunit_error_log_key
CUnitsHelper_Test
CVisitor