Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>This layer contains storm drain structure information, such as type of structure, size and any additional details associated with structure. The mapping of ACHD's stormwater drainage is in response to EPA's Phase I & II of the NPDES Storm Water Program. The GIS database will fulfill the inventory & mapping requirements of all inlets and outfalls within ACHD's jurisdiction. In addition to fulfilling the EPA requirement, ACHD will maintain the mapped stormwater system components in GIS format to enable more efficient and accurate system management, maintenance, and analysis.</SPAN></P></DIV>
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>This layer contains storm drain structure information, such as type of structure, size and any additional details associated with structure. The mapping of ACHD's stormwater drainage is in response to EPA's Phase I & II of the NPDES Storm Water Program. The GIS database will fulfill the inventory & mapping requirements of all inlets and outfalls within ACHD's jurisdiction. In addition to fulfilling the EPA requirement, ACHD will maintain the mapped stormwater system components in GIS format to enable more efficient and accurate system management, maintenance, and analysis.</SPAN></P></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This line file represents the different types of storm drain pipe associated with ACHD Storm Drain infrastructure. SD Pipes, carry storm water ,Combo pipes carry a mix of storm water and irrigation, Seepage Bed pipes are those pipes associate with a Pre-Treatment structure that is represented in SD Structure point file. Siphon pipes are pipes that have no outlet, they are associated with a Siphon inlet that is represented in SD Structure point file.</SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This layer contains those storm drain features that are not piped but associated with ACHD storm drain, such as swales, ditches, borrow ditches, and sand windows.</SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This feature class was developed over years by ACHD staff to identify those irrigation structures that are part of ACHD's storm drain system. Due to large amount of unknowns in database all storm drain data is in the process of being field checked and corrected by ACHD's Maintenance & Operations Drainage crew over the next 2 years (2016-2018). </SPAN></P></DIV></DIV></DIV>
Copyright Text: Ada County Highway District's GIS division, Cloverdale's Storm Drain Crew, and Storm Water Dept.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This feature class was created in part from Idaho Dept of Waters Resources NHD for Ada County, ACHD's mapped irrigation laterals, as well as of Ada County's Assessor's GIS water layer. </SPAN></P><P><SPAN STYLE="font-weight:bold;">ACHD GIS Hydro Layer </SPAN></P><P><SPAN>Hydro-type Definitions </SPAN></P><P><SPAN STYLE="font-weight:bold;">Irrigation –</SPAN></P><P><SPAN>Waterbodies that have been labeled as “Irrigation” are those that are likely man-made water features used primarily to convey irrigation water or drain irrigated land. Waterbodies identified as “Irrigation” Hydro-type have identifiers in their names that include Lateral, Sublateral, Drain or Ditch e.g. the Southern Lateral or Davis Drain. </SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-weight:bold;">Waterway – </SPAN></P><P><SPAN>Waterbodies that have been labeled as “Waterway” are those that are natural water features or natural water features that have been modified. Waterbodies that have Hydro-type “Waterway” have identifiers in their names that include Creek, Gulch, River e.g. Fivemile Creek. </SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-weight:bold;">Waterway-Seasonal (previously denoted as “Waterway-Intermittent”) – </SPAN></P><P><SPAN>Waterbodies that have been labeled as “Waterway- Seasonal” are those that are natural water features that flow or contain water on an intermittent basis, usually after the winter snow melt. These waterbodies may also flow after a heavy rain or rain on snow event. Waterbodies that have Hydro-type “Waterway-Seasonal” have identifiers in their names that include Creek, Gulch, River e.g. Fivemile Creek. </SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-weight:bold;">Canal – </SPAN></P><P><SPAN>Waterbodies that have been labeled as “Canal” are those that are man-made water features that convey water from a natural waterbody such as the Boise River to other waterbodies for the purpose of providing irrigation water for distribution to water users. Waterbodies that have Hydro-type “Canal” have identifiers in their names that include Canal, Aqueduct, e.g. Ridenbaugh Canal. </SPAN></P><P><SPAN /></P><P /><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: Questions regarding ACHD GIS Hydro Layer definitions can be addressed to Erica Anderson Maguire at emaguire@achdidaho.org or 208-387-6254. Questions regarding the creation of this layer or the data therein please contact Sharon Anderson at sanderson@achdidaho.org or 208-387-6242.
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