This is a human-readable view of the FGDC XML metadata.
| Name | Description | Values |
|---|---|---|
| Apt -- More attribute information can be found is the following attached files :Hydrology_attributes.xls and a HYDROLOGY_ATTRIBUTES.txt file | artificial path - an abstract line representing a stream passing through lakes, reservoirs, ponds, wetlands | |
| Bridge | Bridges, culverts, and storm drains | coded values |
| Class | Stream perminancy determined form USGS 7.5 min. quadrangle map | coded values |
| Comments | Any relevant information that does not conveniently fit into any other existing attribute field. | |
| Commonid | A unique stream segment identification number from National Hydrological Dataset (NHD). | |
| Dec-win | New York State Department of Environmental Conservation Water Index Number is an alphanumeric water feature identification system used by New York State agencies. In the Hydrology Data set the I.D. is applied only to the stream reaches represented by line types "s", "scl", and "ap". | |
| Length | Arc length (Internal Software Attribute, in Map Units) | |
| Ltype | Type of water feature | coded values |
| Mmchannel | Man made features assigned where applicable to arcs with line type attributes "s", "scl", or "ap". | coded values |
| Name | For Line types "s", "scl", and "ap" the names of streams are provided as they appear on USGS Quadrangle maps. A few local stream names were added when requested. | |
| Priorityh2o | Priority Waterbodies indentification number from New York State Department of Environmental Conservation 1998 303(d) List of the Clean Water Act. Priority waterbodies are identified so that priority effort will be given to developing solutions to water quality problems. Assigned to applicable streams with a line type attribute of "s", "scl", or "ap". | |
| Protected | A water quality code ,used by NYS/DEC, assigned to all arcs in the county hydrography dataset with a line type equal to "s", "scl", or "ap" that are also part ot the NYS/DEC Water Index Number data set.. Each stream segment that is coded in this data set with an entry in the protected field has some level of "protected" status. | coded values |
| Source | Origin of arc data or most accurate source used to position a stream arc segment where a stream is known to exist | coded values |
| Status | An editing status field. | coded values |
| Strindex | Strahler Index number used to rank relative stream size for all arcs in the county hydrography dataset with a line type equal to "s", "scl", or "ap". This classification system begins with smaller numbers representing headwater streams and progressing to larger numbers downstream as more tributaries enter. This is a standard in simple stream classification first set forth by R.E. Horton and A.E. Strahler. | |
| Tcid | A unique identifier assigned to all arcs in the county hydrography dataset with a line type equal to "s", "scl", or "ap". This identifier includes information about the watershed that it is a part of, it's relative location in that watershed, and whether or not it is included in the DEC, NHD, or Priority Water Bodies datasets.-Confluence to confluence reaches are consecutively lettered with lower case letters, tributaries are consecutively numbered, and capital letters are used to signify its inclusion in another data set. -The TCID code for each stream reach will begin with the name of the watershed that it is from. -Beginning at the confluence of the main stream, each tributary of that main stream is numbered consecutively as you progress up stream. -Tributaries to each of these tributaries will be consecutively numbered in an upstream direction until all tributaries are numbered. -This process of consecutively numbering tributaries of a stem tributary continues until all tributaries have received a number. - Reaches defined by the confluence of two tributaries will be consecutively lettered beginning at the mouth of the stream and progressing upstream, using lower case letters, beginning with "a" and if necessary starting over and progressing through "aa, ab" until you reach its headwater reach. This process is repeated for consecutive reaches of each tributary until all confluence to confluence reaches have received a letter code. -For streams with headwaters outside of Tompkins County and with a confluence in Cayuga Lake, the coding system ends at the county boundary. -For streams with their headwaters in the county that eventually exit across the county boundary, coding for the portions outside the county boundary uses the NYS/DEC Water Index Number map to determine reaches. As the coding proceeds upstream past the county boundary the County Hydrography is used to identify reaches for coding. -If a reach is included in the state DEC stream data set, then the TCID will end in "S". -If a reach is included in the NHD, then the Tompkins County reach code will end with "N". -If a reach is included in the state Priority Water Bodies Inventory list, then the TCID for that reach will end in "P". -If a reach is included in both the DEC and the NHD data sources, then the TCID will end in "SN". ("SNP " will be used when a reach is included in all three data sources.) -If in the future a tributary is added to the county stream data set, it is given a decimal equivalent to its relative distance upstream to the next tributary. (ie. If a tributary were added approximately half way between tributaries 3 and 4, then the new tributary number would be 3.5) - When a reach is divided by the addition of a new tributary, a .1 and .2 decimal is added to the new reaches. .1 is added to the downstream reach and .2 is added to the upstream reach. (ie. If reach Salmon-f were divided the resulting reaches would be Salmon-f.1 and Salmon-f.2) | |
| Watershed | The name of watershed is provided for all arcs. Watersheds are typically defined by a line that divides two adjacent stream systems or groups of smaller streams that flow into Cayuga Lake. A coverage exists that represents the watershed deliniations within Tompkins County and this coverage is the basis for the Hydrography watershed divisions. |