Black Branch 2

Small headwater stream in agricultural landscape. Very narrow channel with limited habitat diversity. Likely classified for fish and aquatic life use. Adjacent agricultural land use and narrow buffers may contribute to impairment. This is potentially an intermittent stream given the very low flow and small channel size.

Channel appears largely natural with no visible engineering modifications. The bedrock substrate controls the grade and limits downcutting. Some bank erosion and root exposure suggests active lateral adjustment but not severe. The channel appears to maintain floodplain access. Score of 7 reflects minor erosion issues but overall natural condition.

The channel shows slight incision with banks approximately 3-6 feet high on one side but the stream still appears to access its floodplain. Agricultural land use upstream likely increases flashiness. The garden hose crossing the stream suggests possible minor withdrawal for agricultural/residential use. Score of 6 reflects minor hydrologic alteration from agricultural land use.

The bedrock-dominated substrate limits sediment deposition. Fine sediment is visible between rock fragments but not dominating the channel. No significant bar development visible. The bedrock nature of this channel means sediment transport is relatively efficient. Score of 7 reflects minor fine sediment accumulation between bedrock fragments.

At current low flow conditions, the stream is dominated by very shallow flow over bedrock. Only slow-shallow and fast-shallow regimes are apparent. No deep water areas visible. The stream is too shallow and narrow to support deep regimes under current conditions. Score of 3 reflects limited habitat diversity.

Water is present but fills only a narrow strip of the channel center. Much of the bedrock substrate is exposed above the water line. Estimated 25-50% of the channel wetted. This may be typical for a headwater intermittent stream in winter low-flow conditions.

The bedrock substrate creates natural irregularities that produce some riffle-like features, but at this low flow level, the distinction between riffles and runs is minimal. The moderate gradient over bedrock suggests that at higher flows, riffles would be more distinct. Score of 5 reflects moderate habitat variety limited by low flow.

This is a small headwater stream with bedrock-controlled grade. The Ordovician limestone bedrock of the Central Basin of Tennessee dominates the channel, limiting vertical adjustment. The moderate gradient and bedrock substrate are most consistent with a B-type channel. The narrow riparian corridor on the agricultural side and wider corridor on the opposite bank create asymmetric cross-section. The channel appears to be adjusting laterally in areas where the bedrock is fractured, as evidenced by root exposure and bank erosion.

The left bank (visible in the RIGHT face image) shows moderate height (3-6ft) with dense vegetation cover but some areas of exposed rock and root exposure. The bank slope is moderate and appears generally stable but with localized erosion. Root protection is present from trees. Score of 5 reflects moderate stability with some erosion concerns.

Dense shrubby vegetation covers most of the left bank. Winter dormancy makes exact assessment difficult but stem density is high. Some invasive species (likely bush honeysuckle based on growth form) appear present. Overall vegetation protection is good at approximately 70-90% coverage.

Left bank is the higher bank with dense dormant vegetation. Some invasive shrub species suspected based on growth form. Natural rock outcrops at base provide some stability.

The right bank (visible in LEFT face) is lower but transitions quickly to agricultural land. The riparian buffer is very narrow (estimated <25ft) and sparse. Root exposure from a large tree is visible in the BACK face, indicating active erosion and bank migration. The proximity of agricultural fields with minimal buffer reduces stability. Score of 4 reflects moderate instability with poor buffer protection.

The right bank has sparse tree coverage with significant gaps where agricultural fields are visible immediately beyond a few scattered trees. The buffer is narrow and discontinuous. Coverage estimated at 50-70%, with grass/herbaceous cover transitioning quickly to agricultural use. Score of 4 reflects compromised vegetative protection.

Right bank has a very narrow riparian buffer before agricultural fields begin. Severe root exposure on at least one large tree. The agricultural fields appear to be pasture/hay. A red barn is visible in the distance. The narrow buffer is a significant concern for water quality protection.

The left riparian zone (visible in RIGHT face) shows dense shrubby and tree vegetation extending an estimated 25-50 feet from the channel. For this narrow stream (~3-5 ft wide), this represents approximately 5-10x the channel width. The riparian corridor on this side appears reasonably wide with wooded hillside vegetation.

The right riparian zone (visible in LEFT face) is very narrow, estimated at only 10-25 feet of scattered trees before agricultural fields begin. For this stream, while this is several channel widths, the absolute width is inadequate for water quality protection. The filtering function is compromised due to sparse vegetation and narrow width.

The right bank floodplain is dominated by agricultural use with minimal natural vegetation. The left bank has better riparian coverage but the floodplain is narrow and constrained. Overall, one side has good vegetation while the other is severely compromised by agriculture. Score of 2 reflects the marginal condition of the combined floodplain vegetation.

During growing season, the canopy would provide moderate shade from the left bank trees but the right bank's sparse cover means significant light reaches the channel from that side. In winter dormancy (current conditions), shade is minimal. During leaf-out, estimated 25-50% shade coverage. Score of 5 reflects adequate but not ideal shading for a warmwater stream.

The right bank buffer is inadequate and does not meet TDEC minimum 30ft buffer requirements. Agricultural use extends close to the stream channel. Buffer restoration on the right bank is highly recommended and has high potential for success given the adjacent agricultural land. USDA CRP or EQIP programs could support buffer establishment.

The bedrock-dominated substrate provides limited epifaunal colonization opportunity. Some root wads and undercut banks are present, and a few logs are in the riparian zone, but overall the flat bedrock surface offers limited interstitial habitat. Estimated 20-40% favorable substrate. Score of 4 reflects limited but present habitat.

In areas where loose rock fragments exist between bedrock surfaces, moderate fine sediment fills the interstices. The bedrock substrate itself is not embeddable. Where gravel and cobble-sized fragments exist, approximately 25-50% appear surrounded by fine sediment. Score of 5 reflects moderate embeddedness in depositional areas.

The stream is extremely shallow throughout the visible reach. Very few pools are apparent and those that exist are very shallow. The entire stream bottom is discernible. The bedrock substrate limits pool formation except where natural depressions exist. Score of 2 reflects near-absence of meaningful pool habitat.

Limited fish cover types available. Overhanging vegetation (seasonal), undercut banks, and root mats are present. No deep pools, logs in channel, or significant cobble/boulder habitat. The very shallow depth severely limits fish utilization. Score of 3 reflects 2-3 cover types available.

No visible barriers in this reach. However, the very shallow water depth likely acts as a seasonal barrier to fish movement during low-flow periods. A structure is visible downstream (red-roofed building area) that may have associated infrastructure. Score of 8 reflects possible seasonal flow limitations.

Some woody debris is visible in the riparian area and at the channel margins, including decaying logs and a significant root wad. However, the very narrow channel limits the ability of LWD to create meaningful habitat features. No debris jams present. Score of 3 reflects sparse LWD in the channel proper.

Limited but present macroinvertebrate habitat. Undercut banks, some loose rock fragments between bedrock, and leaf packs in depositional areas provide 3 habitat types. The bedrock-dominated substrate limits interstitial habitat. No submerged logs or significant woody debris in the channel proper. Score of 4 reflects marginal habitat diversity.

Score of 6 assigned based on habitat assessment suggesting the potential for facultative macroinvertebrate communities. No direct observations possible from panoramic imagery. The clear water and natural channel suggest moderate biological potential limited by habitat diversity and very shallow depth.

No macroinvertebrates directly observed in imagery. Assessment based on habitat suitability. The bedrock substrate with some loose rock and undercut banks could support facultative taxa. The clear water and moderate habitat suggest Group II organisms could persist. Winter conditions may reduce visibility of organisms.

Suitable Habitat: No

This small headwater stream provides limited habitat for species of concern. The shallow water, narrow channel, and agricultural land use reduce suitability. However, headwater streams can provide important habitat connectivity for salamanders and other small aquatic organisms.

No wildlife directly observed. The surveyor's presence likely disturbed any nearby wildlife. The riparian corridor provides some wildlife habitat (dead wood, brush piles, tree cover) but the narrow buffer on one side and agricultural use limit habitat quality. The winter season reduces wildlife visibility.

Water appears relatively clear with the stream bed fully visible. The stream is so shallow that clarity assessment is limited, but no turbidity, discoloration, sheen, or film is observed. No algal growth visible. Score of 7 reflects generally good water appearance with slight turbidity likely from agricultural runoff influence.

No visible algal growth or macrophytes in the channel. The water is clear without green coloration. The winter season may limit algal visibility, and the thin bedrock substrate and shallow depth provide limited growing substrate. However, the adjacent agricultural land raises concern for nutrient inputs that may manifest in warmer months. Score of 7 reflects current good conditions with potential seasonal concerns.

No manure or waste directly visible in the stream or on banks. However, the adjacent agricultural fields (visible in LEFT and FRONT faces) appear to be pasture/hay fields, and a red barn with possible livestock use is visible. No livestock access to the stream is currently evident, but the narrow buffer on the right bank raises concern. Score of 7 reflects no direct evidence but proximity to potential livestock operations.

This is a warmwater headwater stream in a rural agricultural setting. The very shallow depth makes it susceptible to temperature fluctuations. The narrow buffer on the right bank allows direct solar heating. During summer months, the lack of adequate canopy on one side combined with very shallow depth could lead to elevated temperatures. Riparian buffer restoration on the right bank would significantly improve thermal conditions. Winter conditions at time of assessment show no thermal stress.

No active construction or permit violations observed. The inadequate right-bank riparian buffer adjacent to agricultural fields may warrant review under TDEC buffer requirements.

Terrestrial Invasives Assessment

Aquatic Invasives Assessment

Winter dormancy severely limits invasive species identification. The dense shrubby understory visible in the RIGHT face has a growth form consistent with bush honeysuckle (Lonicera maackii), which is extremely common in Middle Tennessee riparian areas. Some vine growth visible may be Japanese honeysuckle. Confidence is low due to dormant conditions. A growing-season survey would be needed for accurate invasive species assessment.