Images

The AVM-measured velocity used to index mean velocity can be the line velocity from one acoustic path or from multiple acoustic paths.

2" galvanzied pipe mated to a custom PVC clamp mount are used to fasten a horizontal ADVM.

A 4" aluminum I-beam is used allow an ADVM to be raised and lowered on a stainless steel sled.

A 4" aluminum I-beam is used allow an ADVM to be raised and lowered on a stainless steel sled. 

Protective housing prevents damage to ADVM and allows for adjustment of heading and roll.

Protective housing prevents damage to ADVM and allows for adjustment of heading and roll.

Temporary mount for installation of a horizontal ADVM under ice.  A large flange serves as a load bearing base plate with 2" pipe and pipe fittings being used to suspend the ADVM below.

Illustration of a typical remotely recoverable sub-surface deployment.

6" PVC pipe is weighted to allow an ADVM/ADCP to be deployed in a vertical or "uplooker" configuration.

Diagram depicting stationing in midsection measurement where velocity measurements are acquired. Each station width is multiplied by the station depth and measured velocity to compute the discharge in each section. Section discharges are tabulated to compute a total discharge for the cross section.

Kentucky mount constructed from Speed Rail. This mount can be used to deploy Rio Grande, RiverPro, RioPro, and RiverSurveyor ADCPs.

ADCP mounting bracket developed in Ithaca, NY. 

ADCP mounting bracket developed in Ithaca, NY. 

Old custom made Kentucky-style mount on several different boats from Kentucky and Illinois deploying both Broadband (BB) and Rio Grande ADCPs. A pole can be fixed to the mount for deploying a GPS antenna located on top of the ADCP. The Kentucky-style mount constructed of Speed Rail is recommended for Rio Grande Workhorse, RiverPro, RioPro, and Sontek M9.

Old custom made Kentucky-style mount on several different boats from Kentucky and Illinois deploying both Broadband (BB) and Rio Grande ADCPs. A pole can be fixed to the mount for deploying a GPS antenna located on top of the ADCP. The Kentucky-style mount constructed of Speed Rail is recommended for Rio Grande Workhorse, RiverPro, RioPro, and Sontek M9.

Old custom made Kentucky-style mount on several different boats from Kentucky and Illinois deploying both Broadband (BB) and Rio Grande ADCPs. A pole can be fixed to the mount for deploying a GPS antenna located on top of the ADCP. The Kentucky-style mount constructed of Speed Rail is recommended for Rio Grande Workhorse, RiverPro, RioPro, and Sontek M9.

Missouri boat and mount.

Missouri boat and mount.

2-speed sailing winch used by the Illinois Field Office to make low-flow measurements on a tagline. 

Tethered Boat Mount

Examples of tethered acoustic Doppler current profiler (ADCP) boats used for making discharge measurements.

(Left photograph by Jeff Woodward, Environment Canada and right photograph by Geoffrey D. Cartano, U.S. Geological Survey.)

Photograph of tethered boat deployed downstream from a bridge.