All posts by wpadmin

System Status

This webpage was last updated on June 12, 2018

Please read the ALERT data disclaimer and see note below concerning winter operations.

TYPE CODES & ABBREVIATIONS:
P=rain/precipitation gage, S=stream gage, Wx=weather station, R=repeater, O=reservoir outflow in cfs, TB=tipping bucket rain gage, PT=pressure transducer water level sensor, SE=water level float shaft encoder, WS/WD=wind speed/direction, TX=radio transmitter, RF=radio related

 

ID Station Name (Type) Problem Description Contractor
1330 Roslyn (P) DISCONTINUED
2190 Squaw Mountain (Wx) DISCONTINUED
OneRain and WET ARE THE CURRENT PROJECT MAINTENANCE CONTRACTORS.

 

NEW STATIONS 2017 & 2018
THE FOLLOWING RAIN GAGES MAY BE AFFECTED BY LAWN IRRIGATION WATER:
420 Expo Park 600 Harvard Gulch Park 720 Confluence Pond
430 Utah Park 630 Temple Pond 750 Quincy Reservoir
500 Havana Park 640 Goldsmith at Eastman 830 Side Creek Park
510 Virginia Court 1500 Powers Park
…..ALWAYS INSPECT RAW DATA CAREFULLY TO VERIFY RAINFALL AMOUNTS…..
THE FOLLOWING RAIN GAGES HAVE EXPERIENCED PAST PROBLEMS WITH “WILDLIFE INTERFERENCE” (BUGS, BIRDS):

 

200* Leyden Reservoir 720* Confluence Pond 1900 Niver Detention
220* Upper Leyden 730* No Name at Quincy 4060 Lakeshore
410 Kelly Dam 1100 Louisville Recreation Center  
610 Harvard @ Jackson 1200* Broomfield 3207
710* Horseshoe Park 1600* Englewood Dam
* INDICATES RECURRING EPISODES
…..REGARDING WINTER OPERATIONS…..

MOST ALERT RAIN AND STREAM GAGES ARE REMOVED FROM THE FIELD FOR OFF-SEASON STORAGE, SERVICING AND REPAIR.  BOULDER COUNTY MOUNTAIN GAGES REMAIN IN OPERATION OVER THE WINTER TO ASSURE READY STATUS FOR EARLY SPRING STORM MONITORING.  ALL ALERT WEATHER STATIONS AND REPEATERS OPERATE YEAR-ROUND ALONG WITH THE FOLLOWING STREAM GAGES:

 

 

1003 Maple Grove Reservoir 1649 SPR at 19th Street 1813 Sand Creek near mouth
1629 SPR at Dartmouth Avenue 1659 SPR at Henderson 2333 Bear Creek at Morrison
1643 SPR at Union Avenue 1703 Cherry Creek at Champa 703 Toll Gate at 6th

UDFCD ASSISTS BOULDER COUNTY WITH MAINTAINING ALERT STATIONS IN THE BOULDER CREEK AND SOUTH BOULDER CREEK DRAINAGE BASINS. BOULDER COUNTY MAINTAINS THE STATIONS LOCATED IN THE SAINT VRAIN CREEK AND LEFT HAND CREEK WATERSHEDS.

REPORT PROBLEMS TO KEVIN STEWART AT 303-455-6277.

 

Blinking Alarms

A recent update to ALERT GMap causes active alarms to blink and stop blinking when the alarm becomes inactive.  When you click on the blinking station you will see the actual time that the alarm occurred and the threshold that triggered the alarm.

Click here to see a Flash™ video of this feature.

Wednesday Webinars

On July 16, 2014 we broadcast our first in a series of short instructional webinars offered to help local officials improve their storm/flood monitoring and emergency response capabilities, and keep apprised of relevant changes.  That training focused on how to make best use of the ALERT System GMap website, which is one of the more popular features available from http://alert5.udfcd.org.

A Windows Media Player-compatible recording of this webinar is now available.  You can download it from www.udfcd.org/FWP/ALERT/trainingvideos/.

To receive notices regarding future webinars simply subscribe to the FRAUG list at this website.

Alarm Log Update

The ‘alert5’ alarm log output has been updated to include a threshold column.  Click here to see the alarm log for September 9-15, 2013. 

Alarm logs can be accessed from both the GMap Data Menu and the TABLES webpage.  Use your browser refresh button to update the alarm log during events.

ALERT Map & Server Changes

ahps legend1A number of changes have been made this past month to improve the performance of the ALERT Map and timeliness of the XML files that are used by other real-time applications.

  1. A second NovaStar-5 server is now fully operational. This backup server mirrors the primary server database at Diamond Hill, is remotely located, and will failover automatically should the primary server become disabled. The backup unit also permits load sharing of data processing task. This means that XML files accessible from cloud services can be updated more frequently.  Currently all rainfall, water level and weather data files are updated every minute.
  2. The ALERT Map is one application that benefits from the dual-server implementation. Users should note more reliable automatic 1-minute data refresh rates.
  3. Other changes to the ALERT Map include:
    • NWS warning area polygons are turned on by default and provide one-click access to the corresponding NWS warning product. Just click on the icon attached to the polygon to read the NWS warning.
    • WDT looped Radar images are turned on by default reflecting the last hour of activity. All Radar images have their opacity set for 50%, allowing users to easily see the base map. All gaging station readouts overlay on top of the Radar images.
    • Color coding is applied to all ALERT stage and discharge readouts to reflect threat conditions. The colors correspond to NWS AHPS threat levels with the exception of the blue readout, which represents bankfull conditions.
    • USGS and DWR streamgage readouts are displayed on the stage and discharge maps using darker green backgrounds to distinguish their data from the ALERT data. Links to corresponding webpages supported by the USGS and Colorado DWR can be found by clicking on the readout.
    • Time series plots and links to tabular data are available for all ALERT readouts including measured water levels, discharge estimates and rainfall.

We hope you find these improvements useful. As always, your comments and suggestions are welcome.

Google Chrome Advice

Some Google Chrome users have experienced problems with the ALERT Map webpage updating automatically. To fix this we recommend the following:

  1. Make sure you are running the latest version of Chrome, v.35.
  2. To re-load the page try hitting the F5 key.

This YouTube video shows how to enable auto updates for the Google Chrome browser. If your IT department has disabled the auto update feature…this can turn it back on.

ALERT5 Migration

We have migrated our alert5.udfcd.org URL to a new homepage.  This site contains many of the same features available on the previous ‘alert5’ website.  We believe you will find this new page much easier to use, especially those of you who have smartphones, tablets and iPads.   For those who prefer the previous website, convenient links are provided for accessing the old alert5 webpage.

Monitoring streamflow and water levels

[Fraug 5/16/2014] Monitoring streamflow and water levels

ahps legend1We recently updated a number of ALERT webpages with AHPS features.  AHPS is a NWS acronym that stands for Advanced Hydrologic Prediction Service.  See http://water.weather.gov/ahps2/index.php?wfo=bou for more information about AHPS.  The legend provided was acquired from the NWS AHPS website.  The yellow “Near Flood Stage” is also commonly referred to as the “Action Stage.”

Our AHPS-like ALERT webpages use the same AHPS reference levels.  These levels are used by NWS as guidance for issuing flood advisories and warnings. Three UDFCD webpages that currently employ this feature are:

  1. Contrail Stage Summary Table by OneRain
  2. ALERT Maps by WET
  3. ALERT Streamflow Map by LRE