A device and methods of placing the device for indicating tidal water depth is described. The device having a body in a vertical orientation, with a top, bottom, and at least one viewing surface, with a measurement scale of numerals and marks displayed on the at least one viewing surface, where the numerals increase in value in a direction from the bottom towards the top of the body.

Embodiments of the invention relate to methods and systems for measuring water level and water velocity and making predictions and risk assessment calculations. The method consists of several camera and sensor-based water level and water velocity processes that may be selected automatically to estimate the current level and velocity of a water body and predict water conditions by using real-time and historical data. The invention can trigger alarms based on benchmarks and thresholds set automatically using historical data or by the end-user.

Through discrimination of the scattered signal polarization state, a lidar system measures a distance through semi-transparent media by the reception of single or multiple scattered signals from a scattering medium. Combined and overlapped single or multiple scattered light signals from the medium can be separated by exploiting varying polarization characteristics. This removes the traditional laser and detector pulse width limitations that determine the system's operational bandwidth, translating relative depth measurements into the conditions of two surface timing measurements and achieving sub-pulse width resolution.

Through discrimination of the scattered signal polarization state, a lidar system measures a distance through semi-transparent media by the reception of single or multiple scattered signals from a scattering medium. Combined and overlapped single or multiple scattered light signals from the medium can be separated by exploiting varying polarization characteristics. This removes the traditional laser and detector pulse width limitations that determine the system's operational bandwidth, translating relative depth measurements into the conditions of two surface timing measurements and achieving sub-pulse width resolution.

Disclosed is a device and a method for measuring stream water depth in real-time through positioning data filtering to ensure the reliability of the measured water depth data even when the stream water depth measurement data is filtered and applied to a small stream having a small basin area and a steep slope. The device for measuring stream water depth in real-time through positioning data filtering includes: a measuring part for measuring the water depth of a stream to be measured; a positioning data filtering part for filtering the water depth data measured by the measuring means by a local linear regression-based bivariate scatterplot smoothing technique through elastic bandwidth application; and a water depth calculating part for calculating a water depth of the stream to be measured by using the positioning data filtered by the positioning data filtering part, and minimizing the uncertainty of the water depth measurement.

An automatic water sampler is disclosed. The automatic water sampler of the present invention comprises: a driving unit operated according to the pressure measured by a pressure sensor; a driving magnet approaching a driven magnet according to the operation of the driving unit; and a first wire unlocked by a control rod according to the movement of the driven magnet. The present invention can provide an automatic water sampler, which improves inaccuracy due to conventional interference of an ocean current, flow velocity, and the like, and manual water sampling by depth by automatically sampling water at the correct depth recognized through a pressure sensor, thereby enabling reliability and accuracy of a sample to be ensured and sampling expenses to be remarkably reduced.

A platform, system, method, and computer readable media is provided which is configured for monitoring water level height of one or more bodies of water. In a version the system generally comprises one or more of the following components: (a) a plurality of sensor nodes, each sensor node associated with a predetermined geographical location near water, wherein each sensor node comprises: (i) a detector configured to collect environmental data pertaining to changes in water surface height; and (ii) a telemetry module configured to wirelessly transmit the environmental data collected by the detector; (b) a gateway device configured to receive and route the environmental data, the gateway device comprising a gateway device processor and non-transitory computer readable storage media encoded with a computer program including instructions executable by the gateway device processor to create a gateway device application comprising: (i) a software module configured to receive the environmental data; (ii) a software module configured to apply an algorithm to the environmental data to parse, clean and aggregate environmental data; (iii) a software module configured to wirelessly transmit the environmental data; (c) a cloud based platform configured to support real-time stream processing of sensor node environmental data, the cloud based platform comprising one or more cloud based servers comprising a cloud server processor and non-transitory computer readable storage media encoded with a computer program including instructions executable by the cloud server processor to create a server application comprising: (i) a software module configured to receive the environmental data; (ii) a software module configured to apply an algorithm to the environmental data to determine an environmental trend or condition; (iii) a software module configured to generate an environmental data report comprising environmental trend or condition; and (iv) a software module configured to transmit the environmental data report when certain environmental data parameters exceed predefined thresholds in the form of an alert; and (d) a device comprising a report processor configured to provide a report application comprising a software module configured to receive and display the environmental date report.

This application describes a method, system, and apparatus for measuring the depth of a body of water ahead of the user's location or position. The user can be a driver of a vehicle. The apparatus includes a fording depth sensor, a second fording depth sensor, a proximity sensor to determine road angle or position ahead of the vehicle, wherein the proximity sensor is designed to operate underneath the water surface and a control unit configured to use signals of the wading depth and sensors to compute a wading depth at a location ahead of the direction of vehicle movement and/or to compute a distance ahead of the direction of vehicle movement to maximum wading depth. A method of building the apparatus, system, and vehicle is also provided.

An ecological restoration method for a lake wetland against effects of water level rise in a dry season includes: collecting basic data of a lake; determining wetland phytoremediation species of the lake; determining characteristic water levels of the lake under a baseline scenario and under different water level rise scenarios; determining a restoration range based on wetland types corresponding to different characteristic water levels; selecting an experimental restoration area from the restoration range, and performing ecological restoration; and monitoring a plant community state and waterbird biodiversity, judging whether the restoration reaches a preset goal, and adjusting the method if the restoration does not reach the preset goal. According to the method, the effects of water level rise in the dry season on wetland habitat, biodiversity, ecosystem services and the like can be relieved to the greatest extent, so that an ecological restoration effect of the lake wetland is improved.

Through discrimination of the scattered signal polarization state, a lidar system measures a distance through semi-transparent media by the reception of single or multiple scattered signals from a scattering medium. Combined and overlapped single or multiple scattered light signals from the medium can be separated by exploiting varying polarization characteristics. This removes the traditional laser and detector pulse width limitations that determine the system's operational bandwidth, translating relative depth measurements into the conditions of two surface timing measurements and achieving sub-pulse width resolution.