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BOARD00143
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Last modified
8/16/2009 2:45:36 PM
Creation date
10/4/2006 6:32:35 AM
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Board Meetings
Board Meeting Date
11/25/2002
Description
CF Section - En-Bloc Non-Reimbursable Investment Recommendations CWCB/Division of Water Resources Satellite Monitoring System
Board Meetings - Doc Type
Memo
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<br />~' ' <br /> <br />Memorandum to Rod Kuharich <br />August 21, 2002 <br /> <br />Page 3 <br /> <br />" <br /> <br />. <br /> <br />This new standard for faster transmission rates for sending data from the stream gages to the central <br />computer will greatly Improve the 'real-time' nature of the system. Once the new DCPs are In operation, <br />data transmission will change from once every four hours to every hour. The cost of new DCPs with the <br />new radios is $4800. To replace antennas, batteries, sensors, etc., the total cost per site averages at <br />$8,000. <br /> <br />Refurbishment of Exlstina Stream Galles <br /> <br />DWR, in responding to the needs of CWCB, COEM, LEM and NWS, requests $55,000 for refurbishing <br />existing stream gages. Approximately half of Colorado's satellite-linked gaging stations are located in the <br />rivers and streams of the state. The others are located in reservoirs, ditches, and canals. The electronic <br />equipment is attached to mechanical equipment in and along the stream channel, and electronically relays <br />the data sensed by the mechanical measuring devices. If the mechanical equipment is not properly <br />maintained and periodically refurbished, the quality of the data diminishes. <br /> <br />In FY03 the $55,000 is to be used to repair and refurbish the following sites (sites and amounts may <br />change due to circumstances): <br /> <br />Grape Creek near Westcliffe <br />Cottonwood Creek near Mineral Hot Springs <br />Grounding 15 locations in Division 7 <br />Bank Operated Cableway, Division 6 <br />North Clear Creek below Continental Reservoir <br />Lake Fork Creek below Sugar Loaf Dam <br />Miscellaneous Expense <br /> <br />$ 5,000 <br />$ 5,500 <br />$ 4,000 <br />$ 5,000 <br />$10,000 <br />$10,000 <br />$10,000 <br /> <br />. <br /> <br />Flood Hardenina of Existina Stream Gaaes <br /> <br />DWR and CWCS, jointly, request $100,000 for flood hardening stream gages. A committee of <br />representatives of DWR, CWCB and the USGS has identified forty sites where flood-hardening projects <br />would be useful in flood warning and notification. The cost to modify many of these gages to withstand <br />flood events will vary considerably. Each site is being evaluated for required modifications to flood harden <br />the gage. <br /> <br />This. part of-the -gaglng-station-programinvolves-floodhardeningihose'Stream-gages used for-notification in <br />the event of floods or dam breaks. Flood hardening, by definition, allows for stream flow data to continue <br />to be transmitted during a flood event. Flood hardening prevents the need to develop a plan to remove all <br />, equipment from stream gages prior to their destruction by floods. While this equipment removal saves <br />equipment costs, this does not allow for data transmission during flood events to emergency managers <br />and the public. <br /> <br />Flood hardening involves moving or modifying the existing stream gages so that they can continue to <br />operate during flood events. Some times it may be necessary to add a second gage at the site on higher <br />ground so that the low flows needed for accurate water administration can be measured and the high flows <br />of floods also can be measured. Another form of flood hardening involves rebuilding the stream channel <br />so that accurate data will continue to be available during the flood. Often the stream channel becomes <br />scoured or modified to the point that existing relationships between stage and discharge are no longer <br />valid at high flow. Even if the data continues to be available, it is of little or no value in determining the flow <br />of the river. <br /> <br />JGBfgla:c:wordfJacklMemo to Rod Kuharich 8-01.doc <br /> <br />. <br />
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