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An Assessment of the Collection and Analysis of Hydrologic Data

An Assessment of the Collection and Analysis of Hydrologic Data 2025

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The document titled 'An Assessment of the Collection and Analysis of Hydrologic Data by Private Contractors for the U.S. Geological Survey' evaluates a contracting effort undertaken by the USGS from 1978 to 1981 for hydrologic data collection across several states. It discusses the costs associated with contracting versus in-house performance, highlighting that contractor costs were generally higher, particularly due to quality control measures. The report emphasizes the importance of detailed specifications, training for contractor personnel, and quality control to ensure accurate data collection. It also outlines various aspects of contract management, including evaluation criteria for contractors, cost comparisons, and recommendations for future contracting efforts.

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How to collect hydrological data?

Methods and techniques for collecting hydrological data resident measurement. - Definition: Hydrological observers are stationed at fixed observation stations in rivers or watersheds to observe hydrological elements such as flow, water level and precipitation. patrol measurement. Inter-testing. Hydrological survey.

What are the steps in hydrological analysis?

Discussion of each of the steps for performing hydrologic analysis is as follows: Hazard Potential Classification. Design Precipitation Requirements. Watershed Location, Limits, and Area. Subdivision of Watershed. Basin and Subbasin Geometry. Timing and Routing Parameters. Reservoir Characteristics. Watershed Model.

What are the examples of hydrological data?

This type of data could include river flow amount and flow direction, rain and snow totals, water body depth and volume, drainage structures and their change through time, overall land usage, stability and health of a stream or river, groundwater flow, environmental hazards, and chemistry of various water samples to

How do we collect water data?

USGS water data is collected at monitoring locations either by automated sensors or manual data collection. Each monitoring location has location information that details the location name and identifier, the agency responsible for data collection, and geographic information about the location.

What does hydrological data include?

Typical data include drainage boundaries, flow directions, high water marks, assessments of the performance of nearby drainage structures, assessments of stream stability and scour potential, docHub changes in land use, etc.