nws-flood-thresholds

nws-flood-thresholds is a skill for Claude Code, Codex from xuansenpa1/skillrevise. It costs 50 tokens per session (1,014 once invoked), scanned A, a copy of nws-flood-thresholds, MIT.

A reference and download guide for flood-stage thresholds published by the US National Weather Service (NWS). It helps match these levels to USGS stream-gage stations.

In plain words
What is it for?
Use it to download threshold data, identify a station’s flood levels, and decide which level to use when analysing US water measurements.
Why use it?
It removes the need to find flood thresholds manually across station pages or reports. The levels show when water needs monitoring and when flooding reaches minor, moderate, or major severity.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to download threshold data, identify a station’s flood levels, and decide which level to use when analysing US water measurements.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/xuansenpa1/skillrevise/nws-flood-thresholds
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add xuansenpa1/skillrevise --skill nws-flood-thresholds
Clone the repo
git clone --depth 1 https://github.com/xuansenpa1/skillrevise

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for nws-flood-thresholds

README.md
[![agentmods](https://agentmods.dev/badge/skills/xuansenpa1/skillrevise/nws-flood-thresholds/github.svg)](https://agentmods.dev/skills/xuansenpa1/skillrevise/nws-flood-thresholds)
Your own site
<a href="https://agentmods.dev/skills/xuansenpa1/skillrevise/nws-flood-thresholds"><img src="https://agentmods.dev/badge/skills/xuansenpa1/skillrevise/nws-flood-thresholds/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for nws-flood-thresholds

Your own site · 80×15
<a href="https://agentmods.dev/skills/xuansenpa1/skillrevise/nws-flood-thresholds"><img src="https://agentmods.dev/badge/skills/xuansenpa1/skillrevise/nws-flood-thresholds.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,014 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00050 $0.01014
Opus 5 $0.00025 $0.00507
Sonnet 5 $0.00010 $0.00203
Haiku 4.5 $0.00005 $0.00101

Measured 8d ago against content hash f0a534dad207, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

nws-flood-thresholds scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

import urllib.request
Origin

This is a copy

100% identical to nws-flood-thresholds — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

data/skillsbench/tasks/flood-risk-analysis/environment/skills/nws-flood-thresholds/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

NWS Flood Thresholds Guide

Overview

The National Weather Service (NWS) maintains flood stage thresholds for thousands of stream gages across the United States. These thresholds define when water levels become hazardous.

Data Sources

Option 1: Bulk CSV Download (Recommended for Multiple Stations)

https://water.noaa.gov/resources/downloads/reports/nwps_all_gauges_report.csv

Option 2: Individual Station Pages

https://water.noaa.gov/gauges/<station_id>

Example: https://water.noaa.gov/gauges/04118105

Flood Stage Categories

Category CSV Column Description
Action Stage action stage Water level requiring monitoring, preparation may be needed
Flood Stage (Minor) flood stage Minimal property damage, some public threat. Use this to determine if flooding occurred.
Moderate Flood Stage moderate flood stage Structure inundation, evacuations may be needed
Major Flood Stage major flood stage Extensive damage, significant evacuations required

For general flood detection, use the flood stage column as the threshold.

Downloading Bulk CSV

import pandas as pd
import csv
import urllib.request
import io

nws_url = "https://water.noaa.gov/resources/downloads/reports/nwps_all_gauges_report.csv"

response = urllib.request.urlopen(nws_url)
content = response.read().decode('utf-8')
reader = csv.reader(io.StringIO(content))
headers = next(reader)
data = [row[:43] for row in reader]  # Truncate to 43 columns
nws_df = pd.DataFrame(data, columns=headers)

Important: CSV Column Mismatch

The NWS CSV has a known issue: header row has 43 columns but data rows have 44 columns. Always truncate data rows to match header count:

data = [row[:43] for row in reader]

Key Columns

Column Name Description
usgs id USGS station ID (8-digit string)
location name Station name/location
state Two-letter state code
action stage Action threshold (feet)
flood stage Minor flood threshold (feet)
moderate flood stage Moderate flood threshold (feet)
major flood stage Major flood threshold (feet)

Read the full file on GitHub · 124 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 124 lines · 50 tokens per session scan A f0a534dad207

Subscribe to this mod's changes

nws-flood-thresholds is a skill published in the GitHub repository xuansenpa1/skillrevise (56 stars, last pushed 6d ago), licensed MIT. It adds 50 tokens to every session and 1,014 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 100% identical to nws-flood-thresholds, differing in 0 lines, and is treated as a copy.

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