CW3E id: GPO
CDEC id: GPO
NWS id: --
Lat/Long: 37.907655 / -119.953053
Elevation: 1312m
Team Lead: Douglas Alden
Install Date: March 10, 2022
Permit Expires: --
Watershed: Tuolumne
Telemetry: Cell
Land Owners: Hetch Hetchy Water & Power
Permit Type: Handshake
Site Type: RadMet
CDEC id: GPO
NWS id: --
Lat/Long: 37.907655 / -119.953053
Elevation: 1312m
Team Lead: Douglas Alden
Install Date: March 10, 2022
Permit Expires: --
Watershed: Tuolumne
Telemetry: Cell
Land Owners: Hetch Hetchy Water & Power
Permit Type: Handshake
Site Type: RadMet
SurfaceMet and RAD-Met have been installed in close proximity at two locations. Site is owned by Hetch Hetchy Water & Power (HHWP).
RAD-Met
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RAD-Met is located on top of a penstock roof adjacent to the Granite Portal valve house.
- Power connection was installed by HHWP electricians and runs to the system through rigid metal conduit from a breaker box in the valve house into the bottom of the enclosure.
- The enclosure stand ( photo ), MRR tie downs ( photo ), disdrometer stand ( photo ) are attached the concrete roof deck with concrete anchors installed by HHWP electricians.
- The MRR is mounted on METEK's aluminum tripod. MRR heater power runs through rigid metal conduit from the bottom of the enclosure to a junction box next to the MRR tripod. It was installed by HHWP electricians ( photo ). Three conductors (black [hot], white [neutral], and green [gnd]) run through the conduit to the junction box. At the junction box the conductors are wire nutted to a short piece of neoprene jacketed wire that connects to the MRR heater ( photo ). The neoprene jacket wire exits the bottom of the junction box through a cable gland and is covered with split loom ( photo ). The MRR data cable exits the bottom of the enclosure through a cable gland. The data cable runs along the outside of the rigid electrical conduit used for the MRR power. Excess cable is coiled at the MRR tripod.
- The disdrometer power/data cable runs through rigid metal conduit from the bottom of the enclosure to a junction box next to the disdrometer stand ( photo ). The cable goes into the junction box and exits the bottom through a cable gland. The cable is continuous through the junction box. The cable is covered with split loom from the junction box to the sensor.
- There is no RF link to the SurfaceMet at this site as would be typical for a RAD-Met because we do not have line of site. The SurfaceMet has its own cellular modem.
- GPS antenna and cellular antenna are mounted to the enclosure stand ( photo ).
SurfaceMet
- The SurfaceMet is located some distance uphill from RAD-Met installation. The site is a burn scar from 2016 and is located on a terrace some distance from the top of the hill. The hill continue to rise to the east of the site ( photo ). The terrace sits on a ridge and has good exposure to the south ( photo ), west ( photo ), and north ( photo ). This may change has the vegetation grows back from the 2016 fire.
Tasks
Sensors
Type | Label | Model | SN | Installed On |
---|---|---|---|---|
Air Temperature/Relative Humidity | -- | HygroVue10 | LE 12 9GX | March 10, 2022 |
Anemometer | -- | RM Young 05108 | 171229 | March 10, 2022 |
Barometer | -- | CS106 | S1230214 | March 10, 2022 |
Disdrometer | -- | OTT Parsivel2 | 410960 | March 10, 2022 |
GPS | -- | Septentrio PolaRx5e | 4801098 | March 10, 2022 |
MRR | -- | METEK MRR2 | 051208 7778 (RDCP) 051208 7780 (Heater Box) | March 10, 2022 |
Pyranometer | -- | CS320 | 2242 | March 10, 2022 |
Tipping Bucket | -- | TE525MM | -- | March 10, 2022 |
Other Equipment
Type | Label | Model | SN | Installed On |
---|---|---|---|---|
Computer | None | OnLogic Neousys Rugged Intel Coffee Lake Low Profile Fanless | K0706745/U744655 | March 10, 2022 |
UPS | None | Tripp Lite Internet550U | BC87F4 | March 10, 2022 |
Cell Modem | RAD-Met | Sierra Wireless RV55 | 2T1204735601B118 | March 10, 2022 |
Cell Modem | SurfaceMet | RV50 | LT90340247021036 | March 10, 2022 |
GPS Antenna | None | Tallysman Wireless VP6000 | VP6050C 20200221 0033 | March 10, 2022 |
Visits
On | Summary |
---|---|
Dec. 10, 2024 | Reinstalled MRR electronics |
Dec. 9, 2024 | Install MRR dish and transceiver |
Aug. 19, 2024 | MRR transceiver and dish removed |
Feb. 1, 2022 | General Maintenance |