1.1 本规程指导用户选择通常用于测量水体深度的程序，如下所示: 小节 程序A-手动测量 6. 通过 11 程序B-电子声波回波探测 12 通过 13 程序C-电子非声学测量 14 通过 15 本文规定了深度测量术语，描述了使用手动和电子设备测量深度，概述了电子测深仪的具体用途，并描述了除使用声纳以外的深度测量电子程序。 1.2 本规程末尾引用和列出的参考文献包含可能有助于设计高质量测量程序的信息。 1.3 提供的深度测量信息本质上是描述性的，不打算认可任何特定的制造设备或程序。 1.4 本规程适用于静态或低电压下的深度测量- 速度流。关于与流量测量相关的深度测量，请参阅测试方法 D3858 . 有关水库勘测的深度测量，请参阅指南 D4581 . 1.5 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 这是一种通用做法，旨在为在地表水体中遇到的各种条件下选择深度测量程序和设备提供指导。测量现场的物理条件、所需数据的质量以及适当测量设备的可用性决定了选择过程。没有讨论实际获得深度测量的分步程序。本规程将与定位技术规程和水深测量程序规程结合使用，以获得水体上点的水平位置和底部高程。

1.1 This practice guides the user in selection of procedures commonly used to measure depth in water bodies that are as follows: Sections Procedure A—Manual Measurement 6 through 11 Procedure B—Electronic Sonic-Echo Sounding 12 through 13 Procedure C—Electronic Nonacoustic Measurement 14 through 15 The text specifies depth measuring terminology, describes measurement of depth by manual and electronic equipment, outlines specific uses of electronic sounders, and describes an electronic procedure for depth measurement other than using sonar. 1.2 The references cited and listed at the end of this practice contain information that may help in the design of a high quality measurement program. 1.3 The information provided on depth measurement is descriptive in nature and not intended to endorse any particular item of manufactured equipment or procedure. 1.4 This practice pertains to depth measurement in quiescent or low-velocity flow. For depth measurement related to stream gauging, see Test Method D3858 . For depth measurements related to reservoir surveys, see Guide D4581 . 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This is a general practice intended to give direction in the selection of depth measuring procedures and equipment for use under a wide range of conditions encountered in surface water bodies. Physical conditions at the measuring site, the quality of data required, and the availability of appropriate measuring equipment govern the selection process. A step-by-step procedure for actually obtaining a depth measurement is not discussed. This practice is to be used in conjunction with a practice on positioning techniques and another practice on bathymetric survey procedures to obtain horizontal location and bottom elevations of points on a water body.