Which statements correctly describe recording type rain gauges used in hydrology?

Introduction:
Recording gauges provide time-resolved rainfall information, essential for deriving intensity, storm profiles, and for hydrograph modeling. Unlike non-recording gauges, they automate data capture across events.

Given Data / Assumptions:

• Options list three standard attributes of recording gauges.
• No specific mechanism (float, tipping bucket, weighing) is mandated by the stem.

Concept / Approach:
Regardless of mechanism, recording gauges generate a continuous trace from which a mass curve (cumulative depth vs. time) and intensity hyetograph can be obtained. Because they integrate accumulation over time, they are termed integrating or continuous gauges.

Step-by-Step Solution:
Confirm mass-curve output is a direct product of a cumulative recorder.Confirm that cumulative rainfall is tracked automatically.Recognize common nomenclature: integrating/continuous rain gauge.

Verification / Alternative check:
Hydrology manuals describe these exact properties for float (syphon), tipping-bucket, and weighing recorders.

Why Other Options Are Wrong:

• Each individual property is true; the comprehensive choice is “All the above.”

Common Pitfalls:

• Confusing recording gauges with non-recording ordinary gauges (e.g., standard 8-inch gauge).

Final Answer:
All the above.