EAUBC Rivers

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Published by the Ministry of Environment and Climate Change Strategy - Knowledge Management
Licensed under Access Only

River and Lake Ecosystem Types nest within both Ecological Drainage Units and Freshwater Ecoregions. They are therefore defined by zoogeographic, physiographic and climatic patterns but also take into account more localized physical habitat and dominant environmental processes that shape freshwater ecosystems. The units of analysis for river ecosystems in BC are at a scale of 1:50,000. Biological information is sparse at this scale of the classification and is therefore not explicitly used to delineate ecosystem types. However, fish assemblages can be inferred for each Ecosystem Type based on the Ecological Drainage Unit it is nested within. Eleven River Ecosystem Types and twenty-three River Ecosystem Sub-Types are identified in BC. In total, 18,100 watershed units are used in the classification of River Ecosystem Types.

Data and Resources

Dataset Extent

Latitude: 48.0° to 60.0°
Longitude: -139.5° to -113.5°

Additional Information

Purpose

EAU BC is a hierarchical classification of BC's freshwater ecosystems. It is a spatially explicit classification designed to aid in the management and conservation of BC's freshwater ecosystems and their associated biodiversity.

Specifically, EAU BC was developed with the following applications in mind:

  • Provide an environmental characterization of freshwater ecosystem types in BC that will aid in their specific conservation and management;

  • Provide a spatially explicit data management system for freshwater ecosystems in BC;

  • Enable regional comparisons of freshwater ecosystems;

  • Help inform species / habitat relationships; and

  • Provide a stratification framework for freshwater inventory / monitoring programs and state of the environment reporting on freshwater ecosystems in BC.

Contact Information

NameCraig Mount (businessExpert)
EmailCraig.Mount@gov.bc.ca
OrganizationMinistry of Environment and Climate Change Strategy
Sub-OrganizationKnowledge Management
NameDave McEwan (pointOfContact)
EmailDave.McEwan@gov.bc.ca
OrganizationMinistry of Environment and Climate Change Strategy
Sub-OrganizationKnowledge Management

Access & Security

Who can view this dataset? Public
Who can download this dataset?Public

Metadata Information

Record Published 2014-12-11
Record Last Modified 2019-09-05
Resource Status completed

Object Description

Object Name: WHSE_LAND_AND_NATURAL_RESOURCE.EAUBC_RIVERS_SP

Short Name: EAUBC_RIV
Comments: RIVER is a spatial layer representing River and Lake Ecosystem Types nest within both Ecological Drainage Units and Freshwater Ecoregions. They are therefore defined by zoogeographic,physiographic and climatic patterns but also take into account more localized physical habitat and dominant environmental processes that shape freshwater ecosystems. Biological information is sparse at this scale of the classification and is therefore not explicitly used to delineate ecosystem types. However, fish assemblages can be inferred for each Ecosystem Type based on the Ecological Drainage Unit it is nested within. Eleven River Ecosystem Types and twenty-three River Ecosystem Sub-Types are identified in BC.

Column Name Short Name Data Type Data Precision Comments
RIVER_ID GIS_TAG VARCHAR2 15 RIVER ID is a unique ID used as a Primary Key.
FRESHWATER_ECOREGION FW_ECOREG VARCHAR2 40 Freshwater Ecoregions are defined based on zoogeographic patterns in fish recolonization following the last glacial recession. Five Freshwater Ecoregions are identified in BC
FRESHWATER_ECO_DRAINAGE_UNIT EDU VARCHAR2 40 Ecological Drainage Units are nested within Freshwater Ecoregions and take into account zoogeographic, climatic, and physiographic patterns that define freshwater systems.
WSA_AREA WSA_AREA NUMBER 14 WSA AREA is the area of polygon in square metres.
WSA_PERIMETER WSA_PERMTR NUMBER 11 WSA PERIMETER is the perimeter in coverage metres.
WSA_WATERSHED_CODE WS_CODE VARCHAR2 45 WSA WATERSHED CODE is a 45 digit numeric code that uniquely identifies (province wide) the lowest order watershed associated with the stream at its mouth.
WSA_GAZETTEER_NAME GAZE_NAME VARCHAR2 30 WSA GAZETTEER NAME is the stream name as it appears in the Gazetteer.
WSA_LOCAL_STREAM_NAME1 ALIAS VARCHAR2 30 WSA LOCAL STREAM NAME1 is the Local Stream Name.
WSA_STREAM_ORDER_50K L_ORDER NUMBER 2 WSA STREAM ORDER 50K is the stream order based on 1:50000 scale mapping (after Strahler).
WSA_STREAM_MAGNITUDE L_MAG NUMBER 5 WSA STREAM MAGNITUDE is the stream magnitude based on 1:50000 scale mapping.
WS_CODE_ORDER WSC_ORDER NUMBER 2 WS CODE ORDER is the watershed code order.
WSA_WATERSHED_ID WSD_ID VARCHAR2 15 WSA WATERSHED ID is a unique watershed ID based upon the 3rd-order and higher delineations for this layer. (e.g. "wsg"WSDnnnnnnnn").
WSA_DOWNSTREAM_WATERSHED_ID DS_WSD_ID VARCHAR2 15 WSA DOWNSTREAM WATERSHED ID is a unique downstream watershed ID based upon the 3rd-order and higher delineations for this layer. (e.g. "wsg"WSDnnnnnnnn").
WSA_DOWNSTREAM_WATERSHED_CODE DS_WSD_COD VARCHAR2 45 WSA DOWNSTREAM WATERSHED CODE is the watershed Code for the watershed which is downstream from this watershed.
WSA_OLD_WATERSHED_CODE OLD_WS_COD VARCHAR2 37 WSA OLD WATERSHED CODE is the 37 digit watershed code used in the previous version of this dataset called the Stream Atlas.
WSA_XREF_WATERSHED_CODE XREF_WS_CO VARCHAR2 37 WSA XREF WATERSHED CODE is the old 37 digit watershed code of a feature. This is used in cases where a stream course has changed due to digital re-processing or the interpretation of the flow has changed between editions of the source NTS sheets.
WSA_REVERSE_STREAM_ORDER W_LEVEL NUMBER 2 WSA REVERSE STREAM ORDER is the watershed reverse stream order.
PCT_WSA_UNIT_BAFA BAFA NUMBER 3 PCT WSA UNIT BAFA is the percent of watershed unit in each BEC Zone - Boreal Altai Fescue Alpine.
PCT_WSA_UNIT_BG BG NUMBER 3 PCT WSA UNIT BG is the percent of watershed unit in ea.ch BEC Zone - Bunchgrass
PCT_WSA_UNIT_BWBS BWB NUMBER 3 PCT WSA UNIT BWBS is the percent of watershed unit in each BEC Zone - Boreal White and Black Spruce.
PCT_WSA_UNIT_CDF CDF NUMBER 3 PCT WSA UNIT CDF is the percent of watershed unit in each BEC Zone - Coastal Douglas-Fir.
PCT_WSA_UNIT_CMA PCTWSNTCM NUMBER 3 PCT WSA UNIT CMA is the Percent of watershed unit in each BEC Zone - Coastal Mountain-heather Alpine.
PCT_WSA_UNIT_CWH PCTWSNTCWH NUMBER 3 PCT WSA UNIT CWH is the percent of watershed unit in each BEC Zone - Coastal Western Hemlock.
PCT_WSA_UNIT_ESSF PCTWSNTSSF NUMBER 3 PCT WSA UNIT ESSF is the percent of watershed unit in each BEC Zone - Engelmann Spruce-Subalpine Fir.
PCT_WSA_UNIT_ICH PCTWSNTCH NUMBER 3 PCT WSA UNIT ICH is the percent of watershed unit in each BEC Zone - Interior Cedar-Hemlock.
PCT_WSA_UNIT_IDF IDF NUMBER 3 PCT WSA UNIT IDF is the percent of watershed unit in each BEC Zone - Interior Douglas-fir.
PCT_WSA_UNIT_IMA IMA NUMBER 3 PCT WSA UNIT IMA is the percent of watershed unit in each BEC Zone - Interior Mountain-heather Alpine.
PCT_WSA_UNIT_MH MH NUMBER 3 PCT WSA UNIT MH is the percent of watershed unit in each BEC Zone - Mountain Hemlock.
PCT_WSA_UNIT_MS MS NUMBER 3 PCT WSA UNIT MS is the percent of watershed unit in each BEC Zone - Mountain Spruce.
PCT_WSA_UNIT_PP PCTWSNTPP NUMBER 3 PCT WSA UNIT PP is the percent of watershed unit in each BEC Zone - Ponderosa Pine.
PCT_WSA_UNIT_SBPS PCTWSNTSBP NUMBER 3 PCT WSA UNIT SBPS is the percent of watershed unit in each BEC Zone - Sub-Boreal Pine-Spruce.
PCT_WSA_UNIT_SBS PCTWSNTSBS NUMBER 3 PCT WSA UNIT SBS is the percent of watershed unit in each BEC Zone - Sub-Boreal Spruce.
PCT_WSA_UNIT_SWB PCTWSNTSWB NUMBER 3 PCT WSA UNIT SWB is the percent of watershed unit in each BEC Zone - Spruce-Willow - Birch.
MEAN_WATERSHED_ELEVATION MEAN_ELEV NUMBER 4 MEAN WATERSHED ELEVATION is the mean watershed elevation in metres above sea level (masl).
MINIMUM_WATERSHED_ELEVATION MIN_ELEV NUMBER 4 MINIMUM WATERSHED ELEVATION is the minimum watershed elevation in metres above sea level (masl).
MAXIMUM_WATERSHED_ELEVATION MAX_ELEV NUMBER 4 MAXIMUM WATERSHED ELEVATION is the maximum watershed elevation in metres above sea level (masl).
STND_DEV_WATERSHED_ELEVATION STD_ELEV NUMBER 10 STND DEV WATERSHED ELEVATION is the standard deviation of watershed elevation in metres above sea level (masl).
MELTONS_RATIO MELTONS_R NUMBER 10 MELTONS RATIO is the Melton's R (max-min elevation)/ sqrt watershed area in square metres.
UPSTREAM_DRAINAGE_AREA DRAIN_M2 NUMBER 17 UPSTREAM DRAINAGE AREA is the total upstream drainage area in square metres.
MAINSTEM_GRAD_CLASS_LESS_002 GRAD1_M NUMBER 6 MAINSTEM GRAD CLASS LESS 002 is the mainstem stream gradient classes: < 2 percent gradient.
MAINSTEM_GRAD_CLASS_002_008 GRAD2_M NUMBER 6 MAINSTEM GRAD CLASS 002 008 is a mainstem stream gradient classes: 2 - 8 percent.
MAINSTEM_GRAD_CLASS_008_012 GRAD3_M NUMBER 6 MAINSTEM GRAD CLASS 008 012 is a mainstem stream gradient classes: 8 - 12 percent.
MAINSTEM_GRAD_CLASS_012_016 GRAD4_M NUMBER 6 MAINSTEM GRAD CLASS 012 016 is a mainstem stream gradient classes: 12-16 percent.
MAINSTEM_GRAD_CLASS_016_020 GRAD5_M NUMBER 6 MAINSTEM GRAD CLASS 016 020 is a mainstem stream gradient classes: 16-20 percent.
MAINSTEM_GRAD_CLASS_GRT_020 MNSTMGRDCL NUMBER 6 MAINSTEM GRAD CLASS GRT 020 is a mainstem stream gradient classes: > 20 percent.
TRIBUTARY_GRAD_CLASS_LESS_002 TRBTRGRDC2 NUMBER 6 TRIBUTARY GRAD CLASS LESS 002 is a tributary stream gradient classes: < 2 percent.
TRIBUTARY_GRAD_CLASS_002_008 TRBTRGRDCL NUMBER 6 TRIBUTARY GRAD CLASS 002 008 is a tributary saream gradient classes: 2 - 8 percent.
TRIBUTARY_GRAD_CLASS_008_012 TRBTRGRDC1 NUMBER 6 TRIBUTARY GRAD CLASS 008 012 is a tributary stream gradient classes: 8 - 12 percent.
TRIBUTARY_GRAD_CLASS_012_016 GRAD4_T NUMBER 6 TRIBUTARY GRAD CLASS 012 016 is a tributary stream gradient classes: 12 - 16 percent.
TRIBUTARY_GRAD_CLASS_016_020 GRAD5_T NUMBER 6 TRIBUTARY GRAD CLASS 016 020 is a tributary stream gradient classes: 16-20 percent.
TRIBUTARY_GRAD_CLASS_GRT_020 GRAD6_T NUMBER 6 TRIBUTARY GRAD CLASS GRT 020 is a tributary stream gradient classes: > 20 percent.
JAN_MEAN_PRECIP_PER_WS_UNIT JN_MN_PRCT NUMBER 10 JAN MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- January.
FEB_MEAN_PRECIP_PER_WS_UNIT FB_MN_PRCT NUMBER 10 FEB MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- February.
MAR_MEAN_PRECIP_PER_WS_UNIT MR_MN_PRCT NUMBER 10 MAR MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- March.
APR_MEAN_PRECIP_PER_WS_UNIT APR_MN_PRT NUMBER 10 APR MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- April.
MAY_MEAN_PRECIP_PER_WS_UNIT MY_MN_PRCT NUMBER 10 MAY MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- May.
JUN_MEAN_PRECIP_PER_WS_UNIT JN_MN_PRCT NUMBER 10 JUN MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- June.
JUL_MEAN_PRECIP_PER_WS_UNIT JL_MN_PRCT NUMBER 10 JUL MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- July.
AUG_MEAN_PRECIP_PER_WS_UNIT AG_MN_PRCT NUMBER 10 AUG MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- August.
SEP_MEAN_PRECIP_PER_WS_UNIT SP_MN_PRCT NUMBER 10 SEP MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- September.
OCT_MEAN_PRECIP_PER_WS_UNIT OCT_MN_PRT NUMBER 10 OCT MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- October.
NOV_MEAN_PRECIP_PER_WS_UNIT NV_MN_PRCT NUMBER 10 NOV MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- November.
DEC_MEAN_PRECIP_PER_WS_UNIT DC_MN_PRCT NUMBER 10 DEC MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- December.
ANNUAL_MEAN_PRECIP_PER_WS_UNIT ANNL_MN_PT NUMBER 10 ANNUAL MEAN PRECIP PER WS UNIT is the mean monthly precipitation in millimeters per watershed unit (average 30 yrs of data 1961-1990) ClimateSource- Mean Annual precipitation.
JAN_MEAN_TEMP_PER_WS_UNIT JN_MN_TMPT NUMBER 6 JAN MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - January.
FEB_MEAN_TEMP_PER_WS_UNIT FB_MN_TMPT NUMBER 6 FEB MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - February.
MAR_MEAN_TEMP_PER_WS_UNIT MR_MN_TMPT NUMBER 6 MAR MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - March.
APR_MEAN_TEMP_PER_WS_UNIT APR_MN_TMT NUMBER 6 APR MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - April.
MAY_MEAN_TEMP_PER_WS_UNIT MY_MN_TMPT NUMBER 6 MAY MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - May.
JUN_MEAN_TEMP_PER_WS_UNIT JNMNTMPPRW NUMBER 6 JUN MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - Jun.
JUL_MEAN_TEMP_PER_WS_UNIT JLMNTMPPRW NUMBER 6 JUL MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - July.
AUG_MEAN_TEMP_PER_WS_UNIT GMNTMPPRWS NUMBER 6 AUG MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - August.
SEP_MEAN_TEMP_PER_WS_UNIT SPMNTMPPRW NUMBER 6 SEP MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - September.
OCT_MEAN_TEMP_PER_WS_UNIT CTMNTMPPRW NUMBER 6 OCT MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - October.
NOV_MEAN_TEMP_PER_WS_UNIT NVMNTMPPRW NUMBER 6 NOV MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - November.
DEC_MEAN_TEMP_PER_WS_UNIT DCMNTMPPRW NUMBER 6 DEC MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - December.
ANNUAL_MEAN_TEMP_PER_WS_UNIT NNLMNTMPPR NUMBER 6 ANNUAL MEAN TEMP PER WS UNIT is the mean monthly air temperature in Celsius buffered to stream reaches per watershed unit (average 30 yrs of data 1961-1990) ClimateSource - Mean Annual air temperature.
JULY_MAX_TEMP_PER_WS JLMXTMPPRW NUMBER 6 JULY MAX TEMP PER WS is the maximum July temperature in Celsius per watershed.
PCT_WS_UNT_BEDROCK_INT_META PCTWSNTBD4 NUMBER 3 PCT WS UNT BEDROCK INT META is the percent of watershed unit in each underlying bedrock geology class: intrusives and metamorphic bedrock.
PCT_WS_UNT_BEDROCK_VOLCANIC PCTWSNTBD6 NUMBER 3 PCT WS UNT BEDROCK VOLCANIC is the percent of watershed unit in each underlying bedrock geology class: volcanic bedrock.
PCT_WS_UNT_BEDROCK_HARD_SEDS PCTWSNTBD3 NUMBER 3 PCT WS UNT BEDROCK HARD SEDS is the percent of watershed unit in each underlying bedrock geology class: hard sedimentary bedrock.
PCT_WS_UNT_BEDROCK_SOFT_SEDS PCTWSNTBD5 NUMBER 3 PCT WS UNT BEDROCK SOFT SEDS is the percent of watershed unit in each underlying bedrock geology class: soft sedimentary bedrock.
PCT_WS_UNT_BEDROCK_CARB_SEDS PCTWSNTBD1 NUMBER 3 PCT WS UNT BEDROCK CARB SEDS is the percent of watershed unit in each underlying bedrock geology class: carbonate sedimentary bedrock.
PCT_WS_UNT_BEDROCK_CHEM_SEDS PCTWSNTBD2 NUMBER 3 PCT WS UNT BEDROCK CHEM SEDS is the percent of watershed unit in each underlying bedrock geology class: serpentine and other chemical sedimentary bedrock.
PCT_WS_UNT_BEDROCK_ALLUVIUM PCTWSNTBDR NUMBER 3 PCT WS UNT BEDROCK ALLUVIUM is the percent of watershed unit in each underlying bedrock geology class: alluvium.
ACCUMULATIVE_PRECIP_YIELD CCMLTVPRCP NUMBER 12 ACCUMULATIVE PRECIP YIELD is the accumulative precipitation yield in millimeters (accumulated gridded precipitation average annual precipitation total the entire upstream drainage area of each watershed unit.
PRIMARY_DRAINAGE_WS_UNIT_ID PRMRDRNGWS NUMBER 4 PRIMARY DRAINAGE WS UNIT ID is the primary drainage the watershed unit is found within. Each primary drainage is given a unique numeric code, e.g., Fraser = 1.
MAX_STREAM_MAG_PRIMARY_WS_UNIT MAX_P_MAG NUMBER 6 MAX STREAM MAG PRIMARY WS UNIT is the maximum stream magnitude of the primary drainage the watershed unit is found within.
MAX_STREAM_MAG_WS_UNIT MAG_MAX NUMBER 5 MAX STREAM MAG WS UNIT is the maximum stream magnitude of the watershed unit.
MAGNITUDE_RATIO MAG_RATIO NUMBER 9 MAGNITUDE RATIO is the ratio of watershed unit max stream magnitude and its primary drainage max stream magnitude as a measure of watershed location within its primary drainage.
MAX_STREAM_ORDER ORDER_MAX NUMBER 3 MAX STREAM ORDER is the maximum stream order of the watershed unit.
OCEAN_TERMINUS TERMINAL NUMBER 3 OCEAN TERMINUS is where a watershed unit's outflow is the ocean or not 1=yes 0=no (also indicates whether the watershed unit has an estuary or not) .
REVISED_41_HYDROLOGIC_ZONES HYDRO_GRP NUMBER 3 REVISED 41 HYDROLOGIC ZONES is the revised 41 hydrologic zones by watershed divide.
PCT_GLACIAL_INFLUENCE PCT_GLAC NUMBER 6 PCT GLACIAL INFLUENCE is the percent glacial influence of the watershed unit (glacier area / total upstream drainage area of the watershed unit).
PCT_TUNDRA_INFLUENCE PCT_TUNDRA NUMBER 6 PCT TUNDRA INFLUENCE is the percent tundra influence of the watershed unit (tundra area / total upstream drainage area of the watershed unit).
PCT_WETLAND PCT_WETL NUMBER 6 PCT WETLAND is the percent wetland area per watershed unit.
NUMBER_OF_WETLANDS NUM_WETL NUMBER 3 NUMBER OF WETLANDS is the number of wetlands within the watershed unit.
PCT_LAKE_AREA PCT_LAKE NUMBER 6 PCT LAKE AREA is the percent lake area per watershed unit.
NUMBER_OF_LAKES NUM_LAKE NUMBER 4 NUMBER OF LAKES is the number of lakes within the watershed unit.
K_FACTOR KFACTOR NUMBER 8 K FACTOR is the mean annual peak flow as per Church 1996.
DAYS_ABOVE_0C DD0 NUMBER 7 DAYS ABOVE 0C is the Number of degree days above 0 degrees Celsius per watershed unit (based on air temperature data from ClimateSource).
MEAN_VALLEY_FLAT_WIDTH VFW_MEAN NUMBER 9 MEAN VALLEY FLAT WIDTH is the mean valley flat width per watershed unit taken from the BC stream macroreach dataset.
STREAM_GRADIENT_MODEL GRAD_MOD VARCHAR2 5 STREAM GRADIENT MODEL is the modeled Stream gradient classes. First number = mainstem gradient; second number = tributary gradient for the watershed unit. 1 = steep; 2 = moderate; and 3 = shallow gradient.
FLOW_REGIME_MODEL HYDRO_MOD VARCHAR2 5 FLOW REGIME MODEL is the modeled Flow regime classes. First number = winter; second number = spring; third number = summer; and fourth number = fall. 1 = low; 2 = moderate; and 3 = high flow.
TEMPERATURE_MODEL TEMP_MOD NUMBER 3 TEMPERATURE MODEL is the modeled temperature classes. First number = modeled temperature class. 1= cold; 2 = cool; 3 = warm. Second number = modeled seasonal productivity class. 1 = low degree days; 2 = moderate degree days ; 3 = high degree days.
NUTRIENT_MODEL NUTR_MOD VARCHAR2 5 NUTRIENT MODEL is the modeled nutrient classes based on dominant underlying bedrock geology: Alluvium; Serpentine and other Chemical Sediments; Carbonates; Hard Sedimentary Rock; Soft Sedimentary Rock; Volcanics; and Intrusive and Metamorphic.
RIVER_ECOSYSTEM_CLASS RIVER_CLAS VARCHAR2 16 RIVER ECOSYSTEM CLASS is the river ecosystem class. Hydrologic Connectivity Classes: H: Headwater T: Tributary M: Mainstem C: Coastal
RIVER_ECOSYSTEM_TYPE RIVER_TYPE VARCHAR2 16 RRIVER ECOSYSTEM TYPE include: H1: Coast Headwaters H2: Interior, Low Relief Headwaters H3: Interior, High Relief Headwaters T1: Coast Tributaries T2: Interior, Low Relief Tributaries T3: Interior, High Relief Tributaries M1: Coast Mainstems M2: Interior, Low Relief Mainstems M3: Interior, High Relief Mainstems C1: Outer Coast and Island Coastal Rivers C2: Inner Coast and Fjord Coastal Rivers
RIVER_ECOSYSTEM_SUB_TYPE RIVER_SUBT VARCHAR2 16 RIVER ECOSYSTEM SUB TYPE is the river ecosystem sub-type: H1a: High Relief, Coast Headwaters H1b: Low Relief, Coast Headwaters H2a: Interior, Low Relief Headwaters in the NE H2b: Interior, Low Relief Headwaters in the Central Interior H3a: Interior, High Relief Headwaters in the Southern Rockies and Coast Mountains H3b: Interior, High Relief Headwaters in the Northern Rockies and Cassiar Mountains H3c: Interior, Foothills Headwaters T1a: High Relief, Coast Tributaries T1b: Low Relief, Coast Tributaries T2a: Interior, Low Relief Tributaries in the NE T2b: Interior, Low Relief Tributaries in the Central Interior T3a: Interior, High Relief Tributaries in the Southern Rockies and Coast Mountains T3b: Interior, High Relief Tributaries in the Northern Rockies and Cassiar Mountains T3c: Interior, Foothill Tributaries M2a: Interior, Low Relief Mainstems in the NE M2b: Interior, Low Relief Mainstems in the Central Interior M3a: Interior, High Relief Mainstems in the Southern Rockies and Coast Mountains M3b: Interior, High Relief Mainstems in the Northern Rockies and Cassiar Mountains C1a: Exposed Outer Coast and Island Coastal Rivers C1b: Sheltered Outer Coast and Island Coastal Rivers C2a: Upper Inner Coast and Fjord Coastal Rivers C2b: Lower Inner Coast and Fjord Coastal Rivers - 999: Undefined
RIVER_SUBTYPE_LABEL PR-RIVER-S VARCHAR2 16 RIVER SUBTYPE LABEL is the River ecosystem sub-type after Eliminating the undefined ("- 999") value from the River ecosystem sub-type values for presentation purpose.
FEATURE_CODE F_CODE VARCHAR2 10 FEATURE CODE is a standard alphanumeric code to identify the type of feature represented by the spatial data.
GEOMETRY GEOMETRY SDO_GEOMETRY 1 GEOMETRY is the column used to reference the spatial coordinates defining the feature.
OBJECTID OBJECTID NUMBER 38 OBJECTID is a required attribute of feature classes and object classes in a geodatabase.
SE_ANNO_CAD_DATA BLOB 4000 SE_ANNO_CAD_DATA is a binary column used by spatial tools to store annotation, curve features and CAD data when using the SDO_GEOMETRY storage data type.
FEATURE_AREA_SQM FEAT_AREA NUMBER 19 FEATURE_AREA_SQM is the system calculated area of a two-dimensional polygon in square meters
FEATURE_LENGTH_M FEAT_LEN NUMBER 19 FEATURE_LENGTH_M is the system calculated length or perimeter of a geometry in meters