My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
HYDRO30209
DRMS
>
Back File Migration
>
Hydrology
>
HYDRO30209
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 8:48:59 PM
Creation date
11/21/2007 12:04:09 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1977215
IBM Index Class Name
Hydrology
Doc Date
12/9/1999
Doc Name
WINDY GULCH ASSESSMENT
From
Water Mgt Consultants
To
DMG
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
40
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
Location and installation of Windy Gukh wells, drive point p/ezometers, and weirs 7 <br />• A summary of each weir installation is provided below. <br />2.3.1 WGU Weir <br />The WGU (Windy Gulch Upper) Weir is located in Windy Gulch immediately above the culvert <br />crossing at Bachelor Mountain Road (Plan 2.1). Specifically, the weir is located within the outlet <br />area of an existing ponded area above the road crossing, Flows from the contributing upstream <br />drainage area are captured by this small ponded area and converge into the single outlet channel <br />in which the weir was constructed. <br />To wmplete the weir installation, the downstream bens of the weir pond was reconstructed. The <br />weir plate was sized to provide a maximum of 2 ft of head through the 90° V-notch, resulting in a <br />maximum flow capacity through the weir of approximately 14 cfs (6,300 gpm). Detailed weir <br />dimensions and the stage/discharge relationship for WGU Weir are included in Table 2.3. <br />An Aquistar~tl DL-2 datalogger and PS9000 (5 psi) pressure transducer, manufactured by <br />Instrumentation Northwest Inc., are installed at the WGU Weir to record flow stages during <br />months when the water in the weir pond is not frozen. The datalogger is housed in the steel well <br />casing with a locking cover near the weir plate. The pressure transducer is placed just inside a <br />1-inch steel pipe in the weir pond near the staff gauge. Installation of the weir was completed on <br />October 28, 1998. <br />• 2.3.2 9700 Weir <br />The location of the 9700 Weir is about 1,000 ft south of the 9700 waste dump in a gently sloping <br />area of Windy Gulch consisting of mostly medium to fine grained alluvial material near surface <br />(Plan 2.1). This section of Windy Gulch lies down stream of the 9700 adit and dump, and <br />upstream of the 9360 adit and dump in terrain not directly altered by mining activities on site. <br />The weir plate was sized to provide a maximum of 1.5 ft of head through the 90° V-notch, resulting <br />in a maximum flow capacity through the weir of approximately 6.7 cfs (3,000 gpm). Detailed weir <br />dimensions and the stage/discharge relationship for the 9700 Weir are included in Table 2.3. <br />An Aquistar® DL-2 datalogger and PS9000 (5 psi) transducer instrumentation are installed at the <br />9700 Weir to record flow stages during months when the water in the gulch is not frozen. The <br />datalogger is housed in a steel well casing with a locking cover. The pressure transducer is <br />placed just inside a 1-inch steel pipe in the weir pond. Installation of the weir was completed on <br />November 6, 1998. <br /> <br />
The URL can be used to link to this page
Your browser does not support the video tag.