Basics
Watercraft Shoreline Test
Watercraft Shoreline Test
Outcome
Program
Each Unit (number)
Number of exceedances and exceedance rate (exceedances per day and per year) of the single noise event, watercraft shoreline test threshold standard measured in A-weighted decibel (dBA).
Number of exceedances and exceedance rate (exceedances per day and per year) of the single noise event, watercraft shoreline test threshold standard measured in A-weighted decibel (dBA).
This Indicator is reported in the following LT Info areas:
Status
The average number of documented exceedances per day for motorized watercraft determined by the shoreline test (greater than 75 dBA) from 2009 to 2013. There was little to no change in the total number of exceedances per day and confidence in trend was determined to be low due to low sample size and annual variations in exceedance rates. Source: TRPA shorezone monitoring data.

Source: TRPA shorezone monitoring data.

No Subcategories for this Indicator.

Program Noise - Shorezone

Approach

TRPA regulalry monitors noise in the shorezone from motorized watercraft at up to ten locations around Lake Tahoe. Noise monitors are deployed for at least two weeks during peak boating season which occurs July 4th to Labor Day. Noise monitors automatically record all single noise events that exceed 75 decibles (dB), the noise limit for shorezone areas. Afterward, all noise events exceeding 75 dB are listened to by a noise technician to distinguish noise exceedancs from watercraft and non-watercraft. Noise monitors are regularly calibrated to industry standards to ensure accuracy. 

To download all of the shoreline noise data on this page please see Tahoe Open Data.

Partners

Associated Programs data not provided.