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Doodletown Brook, Rockland County, NY, United States

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United States, New York, Rockland County

Doodletown is an isolated hamlet in the Town of Stony Point, New York. It was purchased by Bear Mountain State Park, and is now a popular destination of naturalists.

Inside this hamlet resides Doodletown Brook, a small rocky runnel that feeds into the Hudson river. As a result, some inhabitants that are generally associated with either freshwater or oligohaline (brackish) conditions will meet in these waters, fostering a significant diversity of animals.

Submitted by
Jonah Cheng
Approved by
Fritz Rohde & Lawrence Kent
GPS
41.3010025, -73.9861908
Geographical region
Northern America
Drainage Basin
Hudson River Watershed
River catchment
Hudson River
Water body type
Creek
Water body name
Doodletown Brook
Water body part
Water body course
Lower course
Water body: tributary of
Creek
Tributary name
Timp Brook

Videos above and below water


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Water Chemistry

Water information

Water type
fresh-water
Water color
Clear water
Water transparency
High
Concentration of sediments
Low
Water temperature
72 °C
Water flow/curent
Strong

Chemical parameters

pH
7.2
Conductivity
525
GH
130 mg/l
dGH
KH
141 mg/l
dKH
Dissolved Oxygen
90 %

Substrate in nature

Sand
None
Pebble/Gravel
Grey
Stone
Grey
Stone form
Irregular
Silt/Mud
Beige
Leaves
Few
Driftwood
Few
Submerged terrestrial vegetation
None

Aquatic Biotope

Date of collecting
18 July, 2024
Collecting area
Open water
Water depth
1,0m
Air temperature
22.2 °C
Sunlight
Filtered/dappled sun

Environment

Environment
Affected by human activity
Affected by human activity
Agriculture
Agriculture
Little
Surrounding area

Bear Mountain State Park is a 21,063888km² state park located on the west bank of the Hudson River, stretching across the Rockland and Orange counties. It has served as an important place of nature preservation since 1908, being born out of conservation efforts by the Harriman family. Its woodlands are a home to a great diversity of native fish, amphibians, fish, and reptiles. As such, there are many measures taken to ensure the protection of said animals.

The biggest and most ecologically significant waterbody system are the interconnected Doodletown and Timp Brooks. Generally, these streams have high water flow, allowing temperature to remain below 23,8°C year-round. The water level tends not to fluctuate much, as annual rainfall is less than 76,2cm. The summer months are characterized by high air temperatures, ranging from 29-35°C generally, while the winter months are quite cold, ranging from -6-7°C.

Vegetation:

  • Quercus rubra (Fagaceae)
  • Acer saccharum (Sapindaceae)
Underwater landscape

It is a deciduous forest, with sparse vegetation, both in and outside water. Logs and tree roots are not common in the water. Little algae is to be found.

Water is fairly shallow, with depths not ranging anymore than 2m, with much of the brook being less than 0.5m. A rocky aquascape dominates much of the brook. Water has high visibility; little sediment in the water column. As mentioned before, this brook joins the freshwaters of the mountain with the oligohaline waters of the Hudson.

As a result, many fish from either habitats will dwell, such as the following: Anguilla rostrata, Catostomus commersonii, Etheostoma olmstedi, Hudsonius hudsonius, Lepomis cyanellus (Invasive), Lepomis macrochirus, Rhinichthys atratulus, and Semotilus atromaculatus.

Fishlist:

  • Etheostoma olmstedi (Etheostomatidae)
  • Rhinichthys atratulus (Cyprinidae)
  • Catostomus commersonii (Cyprinidae)
  • Salvelinus fontinalis (Salmonidae)
  • Lepomis macrochirus (Lepomidae)
  • Lepomis cyanellus (Lepomidae)
  • Hudsonius hudsonius (Cyprinidae)

Amphibian:

  • Eurycea bislineata (Plethodontidae)
Threats to ecology

With Bear Mountain being a state park, it is protected by the state. However, being that it is open to hikers and tourists, it is possible that some of its animal inhabitants can fall victim to pollution, littering, and poaching. Some animals, like salamanders, are indicator species, and cannot tolerate much disturbance, lest their population will drastically decrease.

I have also noticed that with the making of trails and subsequent deforestation, some erosion has taken place, destroying significant portion of habitat. That is what inspired me to create this biotope.

Riparian zone

Trees near the aquatic habitat
Few -

Comment by the expert

Lawrence Kent: Appropriate research.

Fritz Rohde: The resarch was appropriate but there is also a lot of other references out there on the fishes in that region of New York.