APISHAPA GAGING STATIONS SUMMARY WWW.APISHAPAWATERSHED.ORG
PIONEER NATURAL RESOURCES
September 23, 2010 Norwest Corporation 950 So. Cherry St., Suite 800 Denver, Colorado 80246 Tel: (303) 782-0164 Fax: (303) 782-2560 Email [email protected] www.norwestcorp.com
Nations
Lisonbee
Eichler's
Bear C
reek
Del A
gua Arroyo
Walsen Arroyo
Jarosa Canyon
Story Creek
North F ork Apishapa
Wahato
ya Cree
k
Cherry C
reek
Berwind A rroyo
Road Ca nyon
Trujillo Creek
School Creek
North Santa C
lara C
reek
Mitotes Canyon
Maurico Canyon
South Santa Clar
a Creek
Gonzales CanyonLong
Canyon
Spring Can
yon
Dry C
anyon
South Fork Trujillo Creek
Frio Canyon
Canyo
n Boni
to
Stock Canyon
Sa
nta Clara Creek
Hicks Canyon
Pryor Canyon
Bitter Arroyo
Wet Canyon
North Fork Trujillo Creek
Black Hawk Canyon
Hank Canyon
Fourm
i le Ca
nyon
Bear Canyon
Middle Fork Trujillo Creek
Luis Canyon
Reilly CanyonSarcillo Canyon
School Canyon
Long Canyon
School Creek
Apishapa River
Apish
apa R
iver
Del Agua Arroyo
1042
1054
1116
1020
AguilarAguilar
I-25
07118000
07118500
T30S R67W
T30S R66W
T31S R66WT31S R67W T31S R65W
T30S R65W
T31S R68W
T30S R68W
T29S R65WT29S R66WT29S R67W
T29S R68W
T32S R67WT32S R66WT32S R68W
Apishapa WatershedApishapa Watershed
0 1 2 3 4 50.5Miles
LegendGaging Stations
Outfall (Outfall #)
Historic USGS Gaging Station
Apishapa River
Perrenial Streams
Interrmittent Tributaries
Apishapa Watershed
Townships & Ranges
S:\174-Pioneer\Maps\apishapa_study\Apishapa Drainage - Overview Map.mxd
Nations Gaging Station
Eichler Gaging Station
Lisonbee Gaging Station
Program Overview In 2007, Pioneer Natural Resources (Pioneer) commissioned Norwest to install continuous water level and salinity monitoring equipment at three locations along the Apishapa River: Nations, Eichler, and Lisonbee. Pioneer installed these gaging stations to better understand the interaction between CBM discharge and water quality in the Apishapa River. Each station is instrumented with an In-Situ Aqua Troll 200 datalogger, a Campbell Scientific CR850 direct readout display, and an in-stream staff gage. Both the Aqua Troll 200 and the CR850 record pressure, temperature, and conductivity every 15 minutes. These data are downloaded, water quality samples are collected, and flow measurements are taken every two weeks. Flow measurements are taken using a current meter and are used to develop a rating curve that correlates to the Aqua Troll 200 pressure reading. All data that’s collected are summarized in tables and graphs and can be found at apishapawatershed.org. Apishapa Monitoring Program Results
Monitoring upstream of any intakes provides assurance of water suitability.
Data shows no impairment to the suitability of water for
irrigation. - Maximum SAR recorded at the Lisonbee station was 2.45
on 9/10/2009. - The maximum SC on record is <1,100 µS/cm.
The monitoring programs results have been made available to
the public and CDPHE since the beginning of the program. Crop Yield Impact The following information was taken from the Water Quality Assessment portion of the CDPHE issued Draft Discharge Permit CO0048313 for Pioneer CBM discharges to the Apishapa River. The
entire draft permit and additional information associated with the draft permit can be found at: http://www.cdphe.state.co.us/wq/PermitsUnit/PUBLICNOTICE/publiccommentnewpage.html
The most sensitive crop grown in the area of concern was determined to be Alfalfa, with an irrigation water conductivity threshold of 1.3 (dS/cm). All three of the Pioneer gaging stations, as well as the historic pre-CBM USGS07118500 station, located on the Apishapa River, have conductivity results below this threshold, indicating no reduction in the 100% yield of the Alfalfa crop.
